Kim Kardashian is giving us major bob envy with her new hair

Straighteners at the ready...

We all love a good hair makeover. For some, it's a post-break-up revamp and for others, it's just a bi-annual style update. Either way, celebrity hair transformations are pretty much essential to our general well-being.

Kim Kardashian has been donning some seriously poker straight long locks of late (see below) but it looks like she's gone for the chop again.

Having debuted her bob hairstyle earlier this month with a wet look hair vibe, the reality TV star showed off her short hair, don't care, in all its glory at The Promise film premiere last night.

Kristen Stewart is another star to completely change up her hair, debuting a new blonde, shaved style at the Los Angeles film premiere of Personal Shopper. It's safe to say that it looks totally different from her previous short brunette style.

Katy Perry is another star who recently underwent a dramatic hair makeover, chopping off her locks just days after it was announced that she had broken up with her boyfriend of over a year, Orlando Bloom.

Just this morning she posted a couple of video clips of her new look to her Instagram feed, and understandably, the world is going crazy for it.

Katy's not the only celebrity to give us some serious hair inspiration.

Whether you're searching for a bit of inspiration for something new, or you're just imagining life in a different shade, check out our favourite celebrity hair transformations and makeovers past and present for some ideas. And, if you want to get your hair in tip-top condition, take this quiz to find out which conditioner you should be using for your hair type...

Who does it best?

Possibly the most dramatic of these celebrity hair makeovers are sported by the likes of Lily Allen, Kylie Jenner and Rita Ora. All style chameleons in their own right, these hair provocateurs love to play around with crazy hues and exciting cuts. Somehow, they manage to make it look oh-so-effortless too. Who can pull off wild things like the colourful sea-punk trend? Them.

And few can do rainbow hair better than queen Kylie Jenner herself. Her ever changing assortment of candy-coloured wigs have set the standard for multi-coloured hair. Both in the fashion world and beyond. Kylie's own line of hair extensions and her fearless sense of style have well and truly cemented her position as a global hair-goddess. And her best mate, Gigi Hadid, has definitely taken on some of her hairstyle tips. They actually give us the confidence to pull off blue hair. Sure, we're yet to actually do it, but the thought is there.

There's also J.Lo who has swapped between flowing, ombre curls to sleek, dark new 'dos. Lily James regularly flicks between her Cinderella-esque style and natural colour and shorter length. And Sienna Miller, who went from her signature blonde bob to a smokey shade of red, recently went back to blonde again. Although these stars haven't opted for bright colours, they've still undergone pretty drastic makeovers. And as always, they've still managed to look amazing in the process. Granted you can pull pretty much anything off with a hot team of hair experts on hand. But, even if you are lacking in a glam-squad, our gallery will guide you to your next ultimate hair makeover.

Gigi Hadid

We're so used to seeing Gigi with her trademark blonde hair that we almost didn't recognise her; but we are loving this pink-haired look on her.

Nina Dobrev

Nina Dobrev embraced the mantra 'new year, new you' with a fresh new haircut.

Nina Dobrev

We love her short, textured 'do.

Amandla Stenberg

Known just as well for her beautiful, natural hair as she is for her stunning acting performances, Amandla decided to kick off the new year with a new 'do...

Amandla Stenberg

Amandla debuted a freshly shaved head, explaining the new look is for her role in the upcoming film 'Where Hands Touch'.

Kanye West

We're used to seeing Kanye West exactly like this. But recently, he switched things up...

Kanye West

By going peroxide blonde. And we think he's looking pretty damn good.

Bella Hadid

We're used to brunette Bella...

Bella Hadid

But recently she went peroxide blonde for Paper magazine. And we love it!

Lucy Hale

Lucy Hale ditched her dip dye hair in favour of a darker shade...

Lucy Hale

And we think it's given her quite the mature edge.

Jennifer Lawrence

J-Law's been rocking the bleach blonde lob for a while now (we were particularly loving it all straightened out in recent weeks now).

Jennifer Lawrence Hair

Debuting much longer lengths at the Madrid premiere of Passengers in November 2016, Jennifer Lawrence was rocking some pretty fab extensions, proving that the oft-troublesome in-between growing-out-your-hair phase doesn't have to be a total hair 'mare.

Kylie Jenner

Kylie went back to her roots recently and dyed her peroxide hair back to...

Kylie Jenner

Black. And we love it.

Jennifer Lopez

Jennifer Lopez rocked her locks long and straight at the Latin Grammy Awards last week but did this to her hair this week...

Jennifer Lopez

Jennifer Lopez on set of Shades of Blue with her curly locks.

Lindsay Lohan

Lindsay darkened the redness in her recently...

Lindsay Lohan

And posted this photo on Instagram. We're thinking Ariel from The Little Mermaid.

Ariana Grande

Ariana Grande traded in her signature brunette ponytail..

Ariana Grande

For a much lighter version = dyeing her hair platinum blonde.

Hailey Baldwin

Hailey Baldwin dyed her golden blonde hair with this season's hottest shade...

Hailey Baldwin

Joining the pink patrol, Hailey gave her blonde hair a rinse with a strawberry pink colour.

Ruby Tando

Remember Ruby Tando from Great British Bake Off. Well, she no longer looks like this...

Ruby Tando

Ruby recently posted an Instagram post of herself with a shaved head... and we LOVE!

Zoe Kravitz

Zoe Kravitz has long sported brunette braids, but recently she swapped them for something new...

Zoe Kravitz

Taking cue from Frank Ocean, Zoe recently posted an Instagram of herself with peroxide blonde, wavy hair.

Demi Lovato

This week Demi proved herself to be quiet the hair chameleon, swapping her brunette locks for this blonde 'do.

Demi Lovato

But it wasn't long until she realised blondes don't necessarily have more fun and dyed her hair back to brown.

Demi Lovato

Earlier in the week, Demi changed her brunette hair for a lighter look.

Demi Lovato

Taking to Snapchat, Demi revealed her newly blonde tresses to her 125.4M followers, writing 'Blondie!' and 'Goldie locks!'

Mollie King

Mollie King has changed up her lob...

Mollie King

...For a much more textured, choppy bob.

Rihanna

She's the chameleon of hair transformations and recently made one of the biggest changes from this sleek look we've seen to date.

Rihanna

Rihanna recently stepped out sporting super long dreadlocks.

Kylie Jenner

Kylie Jenner lightened her already peroxide blond hair...

Kylie Jenner

To this ice-queen white/grey shade.

Amanda Seyfried blonde hair

Here's Amanda Seyfried, who has had one of the most dramatic hair transformations we've seen in a while...

Amanda Seyfried

Swapping her long, sandy blonde 'do for a short, fringed, brunette bob. Now that is a big transformation!

Kylie Jenner

Kylie Jenner has just had a seriously radical hair change...

Kylie Jenner's peroxide hair

Kylie has gone from one extreme to the other in terms of hair colour, debuting her new platinum blonde locks on Snapchat.

Ashley Graham

Ashley Graham traded in her long, rich, brunette locks for a much shorter 'do.

Ashley Graham

We're slightly obsessed with Ashley Graham's shaggy LOB, and we're totally digging the wet-look feel

Victoria and Brooklyn Beckham

Victoria and Brooklyn Beckham pose for a selfie.

Brooklyn Beckham

And now, Brooklyn's got blonde, beachy waves! The style was cut and coloured by Alexis VonK, a stylist who works with Victoria Beckham's go-to hairdresser, Ken Paves.

Kylie Jenner

Our favourite hair chameleon, Kylie Jenner recently swapped her long, mermaid-style brunette locks for something a little brighter...

Kylie Jenner

She changed to this bright red shade, complete with cornrows, which were most likely in place for her next change of wig. After all, she is the hair transformer to end all transformers. 

Georgia May Jagger

Model Georgia May Jagger dramatically changed her hair from this sandy blonde hue... 

Georgia May Jagger

To this firey red shade, complete with long blunt bangs for the Suicide Squad premiere in London.

Amber Rose

Amber Rose added length to her statement blonde shaved head...

Amber Rose brown hair.jpg

And showed us all what she would look like if she had long brunette hair. We're thinking she should grow it, because this looks hot!

Hair Transformations - Sophie Turner

Sophie Turner AKA Game Of Thrones Sansa Stark recently swapped out her signature long red hair for something entirely different...

Sophie Turner

Hello, new blonde hair! The GoT star shared a picture of her new 'do on Instagram with the caption: 'I did a thing...'

Kim Kardashian Hair

In July 2016, Kim Kardashian swapped out her signature long raven locks for something a little different...

Kim Kardashian

No stranger to a hair makeover or two, Kim debuted this chic blunt cut long bob in August 2016. Poker straight an side-parted, it's a grown-out version of summer 2016's favourite 'do the Lob.

Celebrity hair transformations Daisy Ridley before.jpg

Daisy Ridley dramatically changed her wavy brunette LOB by cutting and dyeing it... 

Celebrity hair transformations Daisy Ridley .jpg

To this sleek, red hued crop.

Ariana Grande

Ariana Grande who updated her iconic half-up hair do...

Ariana Grande

With bangs. Whether they're clip-in or real, we don't know, but they look hot either way.

Cara Delevingne

Cara Delevingne took the scissors to her thick long wavy hair...

Cara Delevingne

For an on-trend LOB and we've got to say she really pulls off the whole look, so much so, we're booking in to visit our hair stylists. 

Mila Kunis

Here's Mila Kunis with her standard long, brunette hair.

Mila Kunis

And here she is with her new short, wavy crop that she debuted at the film premiere of Bad Moms. 

Lily Collins

Earlier this year in May, Lily Collins was sporting a brunette bob...

Lily Collins

But the brunette is no longer as she she debuted this bold new look on Instagram - bright pink hair.

The most dramatic A-list hair makeovers, ever

Here's Elle Fanning, seen here with her trademark blonde locks...

Elle Fanning

Who revealed a slightly dusty pink hue last night on her Instagram. 

Maisie Williams

Here's Maisie Williams seen here with her trademark brunette locks...

Maisie Williams

She showed off her new look at the Serpentine Summer Ball. She's dyed her hair several shades darker on a trip to Neville Salon.

Lauren Conrad

In July 2016 Lauren Conrad's trademark blonde locks had an update...

Lauren Conrad

By way of platinum blonde. The Hills star had opted for a much lighter shade as seen in an Instagram snap, shared by her hair colorist.

Blake Lively

In June 2016, Blake Lively, who this month changed up her usual sleek tresses for a bold curly style.

Bella Hadid

Here's Bella Hadid, who recently swapped her rich brunette hue for a mermaid-esque, graduated colour. 

Bella Hadid

Hair guru, Sam McKnight gave Bella Hadid a graduated peroxide blonde to pink 'do with on-trend dark roots. 

Bella Thorne

Bella Thorne added a twist of colour to her amazing strawberry blonde hair...

Bella Thorne

With ends of pink and red and revealed it on Instagram, captioning it: Red AND pink bitches!!! Thank you to my babies for bringing this to life !!

Kendall Jenner

Kendall Jenner - she of brilliant raven hair fame - has gone for the fashion crop du jour...

Kendall Jenner

Stepping out in June 2016, Kendall debuted a much shorter shoulder-skimming 'do. A Lob, if you will!

Halle Berry

Halle Berry debuted her badass new 'do on Instagram. Posh pixie cut begone - Halle's had a cool lotus design shorn into her recently bobbed hair. The caption read: 'AND FOR MY NE?T TRICK[sic]'

Ariana Grande

Ariana Grande has ditched her trademark brunette locks...

Ariana Grande

For a blonde 'do, which she debuted on her snapchat (username: moonlightbae if anyone's interested). We have to admit, we love it!

Victoria Beckham

The guest of honour at the amfAR gala in Hong Kong, Victoria stepped out in her own creation, looking glam in a navy blue wrap-around skirt and corset top with bold checks, proving she's the best ambassador for her designs.

Victoria Beckham

Showing off a new bob on her Insta, writing '#chopchop X @lukehersheson @wendyrowe using Victoria Beckham make up X Kisses VB'

Emma Stone

At the Irrational Man photocall in Cannes, Emma Stone secures her auburn layers to one side.

Emma Stone brunette.jpg

To this brunette bombshell look at the The Metropolitan Museum of Art's Costume Institute Benefit Celebrating the Opening of Manus x Machina: Fashion in an Age of Technology.

Jaime King

Jaime King who went from this sweet, sandy blonde hair colour...

Jaime King

To this, darker, edgier brunette shade to attend the opening of the Chan Luu boutique opening in New York.

Lily Collins

Lily Collins traded up this look, in favour of something a little different...

Lily Collins

To this bold, red hue - debuting the look on her instagram account.

Amber Le Bon

Amber Le Bon who went from this...

Amber Le Bon

To this powder pink shade with hints of purple to attend the Jaguar Land Rover event in Munich.

Emma Stone

Emma Stone switched-up her classic hair hue in favour of something a little darker...

Emma Stone

To this ultra-chic brunette look to attend the Met Gala, New York.

Kylie Jenner

Kylie Jenner has had more hair colour changes than we ve had Pret lunches. In fact, we were kind of shocked to see her sans extensions and rocking her natural hair colour recently. It didn t last long though. At this year s Coachella festival, Jenner was spotted partying up a storm alongside former brother in-law Scott Disick with Ariel-esq acid orange hair. There s the Kylie Jenner we know and love.

Kylie Jenner

To this slightly less statement blonde shade, as shared by the youngest Jenner on to her 59 million Instagram followers with the caption 'gotta bring the blonde back 💛'.

Atlanta De Cadenet

Atlanta De Cadenet went from this ultra-classic brunette look...

Atlanta De Cadenet

To this standout pink hue, seen attending the star-studded Chanel Artists dinner at the Tribeca Film Festival, New York.

Poppy Delevingne

Unlike her supermodel sister who sports a dirty blonde hue, Poppy Delevingne looks radiant with a luminous blonde.

Poppy Delevingne

The super-stylish model debuted her new pale pink hair hue at the star-studded Coachella festival, 2016.

Kristen Stewart

Kristen Stewart has long been known for her glossy brunette locks, often mixing it up with up-dos, quiffs and shaggy waves. We love.

Kristen Stewart

Kristen left behind her trademark dark locks for the first time ever when she debuted her new peroxide 'do while out in New York. 

Gigi Hadid

Gigi has long been sporting super-glossy long blonde locks, and now, the stunning 20-year-old has re-charged her 'do in the chicest way possible...

Gigi Hadid

Gigi changed-up her look and went for a darker hue, debuting her super-glossy locks at the Stuart Weitzman party, New York.

Gigi Hadid

Quite the hair chameleon, prior to her new brunette 'do, Gigi experimented with a Bardot-inspired choppy fringe at the MTV Movie Awards.

Hailey Baldwin

Hailey Baldwin was once a sleek blonde. And now...

Hailey Baldwin

Debuting a dark black bob, Hailey looked unrecognizable with her new hairstyle. But before you start missing her straight blonde locks, the model captioned the photo 'obviously it's a wig.' Either way, we think she looks stunning.

Hannah Murray

Former Skins and current Game Of Thrones star Hannah Murray is usually spotted with blonde wavy locks...

Hannah Murray

But now the actress is sporting a totally different look, showing off a bright red hue at the Season 6 premiere of Game Of Thrones in April 2016.

Alesha Dixon

Take Alesha Dixon, who has ditched her blonde-dyed 'do...

Alesha Dixon

For a a spring-ready purple! Sporting a newly dyed hue at the Britain's Got Talent auditions, Alesha unleashed her inner Nicole Richie on the unsuspecting crowd. And we have to admit, we are loving it.

Vanity Fair Oscar Party, Los Angeles, America - 28 Feb 2016

Emma Roberts

For an unbelievably gorgeous rose gold shade. Nikki Lee, stylist to the stars, posted this beautiful snap of the actress, writing 'Thank you @emmaroberts for letting me turn you into a #DesertRose dream! I'm obsessed!!!'

Justin Bieber

Justin Bieber for example, the pop-star is was nothing short of handsome with this short and blonde do as of late - but he's only gone and switched it up again (of course)...

Justin Bieber

In April 2016 Justin changed his 'do once again when he opted for these peroxide twists/dreadlocks. Wonder how long he'll keep 'em in for?

Abigail Breslin

Abigail Breslin is gearing up for her role in the Dirty Dancing remake with a new 'do here...

Abigail Breslin

Debuting a brunette hue on her Instagram, Abigail wrote 'Mirror selfie feat. brown hair feat. reminder nobody puts baby in the corner,' clearly letting Dirty Dancing fans know that their beloved film remake is well on its way to your TV screens.

Cate Blanchett at the Oscars 2016

Red carpet vet Cate Blanchett went for a signature smokey eye and then a slight blush on the night while she kept her bob behind her ears to show off those absolutely jaw dropping earrings.

Cate Blanchett

Debuting a bright pink bob while strolling through London in March 2016. We can't wait to see how she styles it on the red carpet.

Billie Piper

Billie Piper has always stayed true to her blonde tresses, but has decided to switch things up just in time for SS16...

Billie Piper

With the former Doctor Who actress recently being spotted with a rich ginger shade.

Serena Williams

Tennis pro Serena Williams has always been one to bring fashion to the game, and this time the athlete has changed up her hair to stir things up...

Serena Williams

Mimicking the green courts of tennis, Serena showed off her brand new ombre green mane, explaining to her followers that her friends asked for the new look, writing 'For Genie and Chrissie. U asked for it. Lol'

Irina Shayk

Model Irina Shayk has ditched her brunette tresses...

Irina Shayk

Showing off a blonde 'do on her Instagram, writing 'Who said I can't be blonde? @mertalas @macpiggott.'

Kaia Gerber

Cindy Crawford's daughter - and 'It Girl' of the moment - Kaia Gerber may have just debuted on the Hollywood scene, but she's already changing up her natural locks...

Kaia Gerber

Debuting a platinum blonde look, Kaia took a page from Kylie Jenner's book, revealing that her new 'do was courtesy of a hair piece - writing on her Instagram, 'just a lil wig :)'

A-List Hair Makeovers - Shailene Woodley

Divergent star Shailene Woodley has ditched her short blonde tresses...

Shailene Woodley

For a luscious brunette hue, with her shorn locks now a full mid-length. We have to admit, we LOVE this colour on her.

Kylie Jenner

Kylie has done it again, with the hair chameleon switching up her trademark raven locks...

Kylie Jenner

For a 'midnight blue' 'do, which she debuted in March 2016. We have to admit, girl knows how to work those blue hues.

Meghan Trainor

Meghan Trainor has ditched her signature blonde tresses...

Meghan Trainor

The singer debuted a reddish-hued 'do while out and about in New York. And might we say, she looks gorgeous.

Rebel Wilson

Rebel Wilson has opted to ditch her signature blonde 'do...

Rebel Wilson

Debuting a brand new red shade after visiting the salon in LA this week.

Kendall Jenner

Keeping up with Kendall's beauty regime has been extra hard this year. She's been a style chameleon on the catwalk, has experimented with a fringe on the red carpet and was even declared queen of the classic pout when she launched her own lipstick line for Estee Lauder in June. We have such a beauty crush. 

Kendall Jenner

But taking to the Balmain A/W '16 show in Paris in March 2016, Kendall did a Kylie and swapped out her usually long, brunette locks for a decidely ombré blonde 'do. Thoughts?

Gigi Hadid

Gigi Hadid champions white-blonde ends and slightly darker roots - a look that's certainly appropriate for summer.

Gigi Hadid

Hello brunette Gigi Hadid! With her long chestnut coloured locks, the American model bore more than a passing resemblance to her younger sister Bella Hadid.

Bella Thorne

Bella Thorne never fails to impress with her beautiful auburn locks - but now she's changed her look up completely...

Bella Thorne

In February 2016, Bella decided to change her signature ginger tresses to a new 'do, posting on her Instagram, 'Bye bye strawberry:) hello brownie #Latina #iamAlatina'

Bella Thorne

Previously, Bella showed off a radical new blonde style on her Instagram page, writing: 'The blonde mane :) #blonde #blondehair #blondeshavemorefun #notreally'.

Blake Lively

Blake Lively debuted a whole new 'do at New York Fashion Week 2016...

Blake Lively

It seems the blonde actress has opted for a warmer tone for the spring, giving her signature tresses a red hue to match her gorgeous Michael Kors dress.

The Most Dramatic A-List Hair Makeovers

Kim Kardashian West swapped out her signature raven locks for husband Kanye West's Yeezy Season 3 fashion show in New York in February 2016 for a bold new 'do...

Kim Kardashian West

Indeed, Kim Kardashian had a bit of an Elsa from Frozen moment for the Yeezy S3 show - which took place in front of 18,000 people no less at New York's Madison Square Garden, usually the domain of huge concerts and sports matches - debuting a dramatic ice-cool platinum blonde, poker-straight 'do for the event.

Alessandra Ambrosio

We're used to seeing Victoria's Secret model Alessandra Ambrosio with her trademark long, glossy brown locks - but she's changed it all up with her latest style.

Alessandra Ambrosio

In November 2015, Alessandra debuted a choppy new lob - and we absolutely love it. Layered in all the right places, perfectly tousled and very much of-the-moment, this is a style we may just be copying in the months to come.

Bob Hairstyles

Lily Allen traded in her brunette locks in favour of this short, sleek, peroxide blonde bob and we are oh-so-glad she did. Bravo Lily.

Lily Allen

Not one to shy away from a daring new 'do, Lily Allen debuted this super-chic and sophisticated update on the rainbow hair trend by swapping out her peroxide blonde 'do for a sharp and edgy midnight blue bob.

Jennifer Lawrence

The brilliant Jennifer Lawrence who isn't shy when it comes to hair makeover - or two. After having stepped out with long blonde extensions over the summer, J-Law switched up her look again for The Hunger Games press tour in November 2015...

Jennifer Lawrence

Yep, proving that Jennifer Lawrence can rock pretty much any hairstyle - and hair hue - the Oscar-winner stepped out with this sharp-cut platinum blonde bob. And looked rather marvellous in the process, too!

Rihanna

Rihanna

Rihanna is a girl who gets bored easily, though. Here she is performing on stage in October 2015 and she's added a blue hue to her now, mostly raven, hair. Can she do no wrong?

Celebrity Hair Makeovers

Ellie Goulding hasn't changed up her mid-length blonde look too much, except to add a streak of colour now and again. However she is quite shy to play around with her beauty look though...

Ellie Goulding

Debuting a brand new 'do at the MTV Europe Music Awards in late October 2015, the Figure 8 hitmaker stepped out with a new orange-infused strawberry blonde-esque hair hue.

Khloe Kardashian

Khloe Kardashian - who usually favours brunette styles - wears a centre parting in her newly coloured blonde hair and adds texture with soft waves.

Khloe Kardashian

Shared on her hair stylist Jen Aitken's Instagram page, Khloe debuted this utterly gorgeous choppy blonde long bob for sister Kim's baby shower in late October.

Kendall Jenner

Looking for a style for the weekend? Try this high ponytail look from Kendall Jenner. Be sure to keep some fine strands loose to frame the face and keep your look casual.

Kendall Jenner's Pink Hair

Enter Kendall Jenner 2.0 - with a glossy pink candy-coloured new hairstyle. Shorter, choppier and with one of the most playful hair hues you can find, we reckon Kendall looks absolutely brilliant with this new 'do. Thoughts?

Kylie Jenner

Kylie loves to wear wigs and weaves. Seen here in a blonde piece earlier this year. We like!

Kylie Jenner

Kylie's the queen of switching up her style, and she's recently changed her natural look to a chic, black bob which she recently debuted on Instagram.

Ariana Grande

We all love a good hair makeover. Whether it's a post-break-up revamp or just a bi-annual style update - a makeover is pretty much essential to our general wellbeing. Whether you're searching for a bit of inspiration for something new, or you're just imagining life in a different shade, check out our favourite celebrity hair makeovers past and present for some ideas.

Ariana Grande

With bleached blonde locks in that signature half ponytail, Ariana looked practically unrecognisable - but fabulous! - in an Instagram shot promoting her new single Focus.

Britney Spears

Britney Spears

Recently Britney has hopped onto the sea-punk trend with lilac tinges and pulls it off really well. Who said purple hair wasn't for adults?

Lily Allen Blonde Hair

Lily Allen's the showbiz world's resident hair chameleon these days changing up her look regularly. After sporting a multi-coloured bob for most of the year, Lily went for this short and sharp platinum blonde bob for the majority of summer 2015 before changing it up again for London Fashion Week...

Lily Allen Pink Hair

Hello, bubblegum pink long poker-straight locks! Lily deuted her new hair at the PAN premiere in London in September before taking her new 'do to Fashion Week

Sienna Miller

Despite having changed up her hair colour a few times before - recall the brunette long locks at the Met Ball in the mid-Noughties and even a Fashion Week flutter into the rainbow hair trend when she adopted a fashion-forward peachy hair hue? - Sienna Miller is our modern-day blonde bombshell bar none. Having graduated in recent years from her iconic Alfie long hair with parted fringe 'do (who hasn't asked for that at the hairdressers?), Sienna's most recent crop has been a short, sharp and flirty blonde bob. But that all changed in September 2015...

Sienna Miller

Debuting a whole new look at the launch of her sister Savannah's new line for Debenhams in London, Sienna stepped out with a russet red hair hue in her now-signature bob style. Whilst we're unusure whether or not this new 'do is for an upcoming role, it sure looks ruddy wonderful. *Pass the red hair dye, please!*

Kendall Jenner

Kendall Jenner has long been giving us brunette hair envy, and with many a modelling contract under her belt, it's no wonder the 19-year-old keeps her locks in perfect, catwalk-ready condition. Until now...

Kendall Jenner

Kendall took us all by suprise posting this Instagram snap, with what looks to be a brand new blonde hairdo.

We predict this to be a wig, but naturally Kendall looks every bit as chic as a blonde, and could well make the move permanently. Watch this space...

Rita Ora

A style and beauty chameleon of the highest order, Rita Ora is forever changing up her look - but, she rarely veers from her trademark platinum blonde locks. Until now...

Rita Ora

In August 2015, Rita dabbled with the rainbow hair trend with this pink and blue ombré style which debuted on her Instagram account. Thoughts?

Gigi Hadid

Known for her enviably long sunkissed blonde locks and despite being a fan of fan of high fashion hairstyles, model Gigi Hadid rarely plays around with hair colour...

Gigi Hadid

... That was until this week when on a promotional tour of Australia, Gigi swapped out her golden locks for some fun blue tips. We like!

Cara Delevingne

Fuss-free boho waves are a stunning look for Cara Delevingne. A perfect festival 'do that will still look great if you pull your hair into a ponytail.

Cara Delevingne

... And went PINK!

Sure, it was a wig but Cara's mid-length glossy poker straight pastel pink locks have suddenly become our new festival beauty go-to.

Jennifer Lopez

Jennifer Lopez' beauty go-to on the red carpet has long-been leaving her perfectly ombre-hued locks long and loose...

Jennifer Lopez

But J-Lo has switched it up over the last few weeks by going for a sleek shoulder-skimming bob and a darker shade of brunette.

Lily James

As Rose in Downton Abbey and Cinderella in the big-screen, live-action remake of the Disney classic earlier this year, Lily James' long, honey-hued locks have been her characters' beauty signatures.

Lily James

But promoting her new film Pride And Prejudice And Zombies at Comic-Con in San Diego, Lily debuted a brand new 'do, going back to her natural brunette colour and opting for a pretty shoulder-skimming bob.

Kylie Jenner

Much like her famous sisters, Kylie Jenner's beauty signature is her thick and glossy raven locks.

Kylie Jenner

But at the July launch of her new line of hair extensions, Kylie Jenner - who is no stranger to playing with the rainbow hair trend - swapped out the long brunette hair for this candy-coloured blue hue. Try it, if you dare.

Blake Lively

Is it a braid or isn't it? Blake Lively's messy plait could almost be confused for loose curls. It's tangled, tousled and glorious.

Blake Lively

So imagine our surprise when she debuted a new darker 'do on Instagram in July. Captioning the picture with 'brondes have more fun', we're now (obviously) lusting after the new Blake hair.

Emilia Clarke

Emilia Clarke uses vintage curls to recreate a high glamour 1940s look on the red carpet. Her curls start high but group together at the ends with her of-the-moment blunt cut to give it a 2014 update.

Emilia Clarke

But in June Emilia went for the chop, opting for this this on-trend, wavy bob. In short; we love it.