Screen Actors Guild Awards 2015: See all the pics

Take a look at all the best red carpet moments from the 2015 SAG Awards...

Award season is officially underway, which means all those stylish A-listers working a slew of beautiful red carpet dresses for us all to feast our eyes on.

Last night saw the SAG Awards (Screen Actors Guild Awards, should you not be aware) with all the Hollywood heavyweights stepping out to celebrate.

Keira Knightley wowed in yet another incredible gown, giving us all a lesson in how to nail pregnancy dressing. While Jennifer Aniston rocked a plunging frock, leaving very little to the imagination but somehow remaining utterly chic and elegant.

Colour wise, white led the way with Reese Witherspoon and Maggie Gyllenhaal opting for ultra-glam, floor-grazing numbers. While Emma Stone broke all the rules, opting for a black sheer frock by Dior Couture.

Keira Knightley At The Screen Actors Guild Awards 2015

Click through to see all the most stylish red carpet moments from the night...

Keira Knightley At The Screen Actors Guild Awards 2015

Click through to see all the most stylish red carpet moments from the night...

Emma Stone At The Screen Actors Guild Awards 2015

Emma Stone broke the mould, opting for this black Christian Dior Couture mini-dress, complete with sheer panelling at the neckline and a floaty train to match. We salute you Miss Stone.

Maggie Gyllenhaal At The Screen Actors Guild Awards 2015

Maggie Gyllenhaal knows exactly how to take on red carpet dressing, without compromising on her signature style. This white column Thakoon dress ticks all the right boxes when it comes to eveningwear; Plunging neckline, figure-flattering and oh-so-glamorous.

Lupita Nyong'o At The Screen Actors Guild Awards 2015

Lupita Nyong'o worked a printed Elie Saab v-neck gown for her red carpet moment. We love how Lupita cleverly styled this pretty print, something we don't often see during Award season, with some delicate drop earrings and a bold coral lip.

Felicity Jones At The Screen Actors Guild Awards 2015

Felicity Jones stunned in this blush Balenciaga gown. Top marks for tapping into spring's love for all thung nude, plus those beautiful diamond drop earrings and that super-chic updo finish this classic look perfectly.

Jennifer Aniston At The Screen Actors Guild Awards 2015

Jennifer Aniston quite literally stole the show, stepping out in this vintage John Galliano gown. We were pleased to see Jen back to her signature red carpet style, opting to wear those infamous locks in a big bouncy blow dry, complete with centre parting, and showing off that well honed yoga bod in the process.

Naomi Watts At The Screen Actors Guild Awards 2015

Naomi Watts stuck to classic Hollywood glamour for her red carpet appearance, opting for a navy off-the-shoulder frock by Balenciaga.

Natalie Dormer At The Screen Actors Guild Awards 2015

Natalie Dormer wowed in her Naeem Khan dress. We love the flash of pink, plus those  Rupert Sanderson shoes paired with Kimberly McDonald jewelry is the perfect way to complete this showstopping look.

Reese Witherspoon At The Screen Actors Guild Awards 2015

Reese Witherspoon went for white, choosing this one-shoulder gown by Giorgio Armani. Styling up the look, Reese paired her white floor-grazing gown with a bold red lip and a chic, of-the-moment ponytail.

Rosamund Pike At The Screen Actors Guild Awards 2015

Rosamund Pike knows a thing or two about a statement red carpet dress, and this appearance is no different. Stepping out in Christian Dior, Rosamund worked her assymetric gown like a true pro. We love the toussled blow-dry and those pointed pumps complete with tops-to-toe look perfectly.

Claire Danes At The Screen Actors Guild Awards 2015

Claire Danes went for a grecian-style gown that's all kinds of glamorous. Not only is this Marc Jacobs design perfect for her slender frame, but the cut-out waist detail and rich emerald shade perfectly offset her porcelain skintone, too.

Jennifer Aniston & Justin Theroux At The Screen Actors Guild Awards 2015

Jennifer Aniston and Fiance Justin Theroux pose together on the red carpet ahead of the SAG Awards. We love how this duo totally nail red carpet dressing, with Justin looking equally as stylish as Jen, wearing a Givenchy By Riccardo Tisci suit.

Patricia Arquette At The Screen Actors Guild Awards 2015

Patricia Arquette scooped the award for Outstanding Performance By A Female Actor In A Supporting Role, stepping out to accept the coveted prize in a sizzling Vivienne Westwood gown.

Julia Roberts At The Screen Actors Guild Awards 2015

Julia Roberts knows exactly what suits her statuesque frame, and works the black jumpsuit like a pro, stepping out in this tux-style version from Givenchy.

Amy Poehler At The Screen Actors Guild Awards 2015

Amy Poehler went for a super-sparkly halter-neck frock by Jenny Packham for her red carpet moment, balancing out this ultra-glam frock with some beachy waves and barely-there make-up.

Camilla Alves At The Screen Actors Guild Awards 2015

Camilla Alves looked incredible in her Donna Karan Atelier gown, stepping out to support husband Matthew McConaughey on the SAGs red carpet. Top marks for that side-swept blow-dry, and perfect paps pose.

Joanne Froggat At The Screen Actors Guild Awards 2015

Joanne Froggat has had a total style transformation, and the result is this showstopping strapless look. Those beautiful blonde waves have been artfully styled to one side, to showcase this incredible black Honor gown. Loving the matching box clutch bag and subtle tan, too.

Maria Menounos At The Screen Actors Guild Awards 2015

American actress Maria Menounos shimmered in this strapless Romona Keveza gown. Adding some extra glamour, Maria went for some sparking accessories from Neil Lane to complete her look.

Julianne Moore At The Screen Actors Guild Awards 2015

Julianna Moore never puts a foot wrong when it comes to red carpet dressing, and this look is no different. We love how Julianne opted away from the classic red carpet shades of black, red and metallics, instead opting for this emerald green gown by Givenchy Couture.

Laura Carmichael At The Screen Actors Guild Awards 2015

Downton Abbey actress Laura Carmichael worked a white full-skirted frock to collect her award for Best TV Drama Ensemble. Loving the rouge lips and messy hair 'do, too.

Emmy Rossum At The Screen Actors Guild Awards 2015

Emmy Rossum looked every inch the Hollywood starlet, stepping out in this beautiful tulle Armani Prive gown. A little dress inspo for any brides to be too, we reckon.

Viola Davis At The Screen Actors Guild Awards 2015

Viola Davis scooped Outstanding Performance By A Female Actor for her role in How To Get Away With Murder, and we think she should take home the award for best white gown, too for this halter-neck Max Mara number.

Sophia Bush At The Screen Actors Guild Awards 2015

Sophia Bush wowed in this vibrant red, figure-hugging Vivienne Westwood strapless gown, complete with thigh-high split.

Naomi Watts & Liev Schreiber At The Screen Actors Guild Awards 2015

Naomi Watts & Liev Schrieber pose together ahead of the Screen Actors Guild Awards, 2015.

Keira Knightley & James Righton At The Screen Actors Guild Awards 2015

Parents-to-be Keira Knightley and James Righton pose for the cameras at this year's Screen Actors Guild Awards, 2015.

Eddie Redmayne At The Screen Actors Guild Awards 2015

Eddie Redmayne scooped Outstanding Award By A Male Actor for his role in The Theory Of Everything. Turning up to accept his award, Eddie worked a smart Prada tuxedo look that we are totally loving.

Gretchen Mol At The Screen Actors Guild Awards 2015

Gretchen Mol looked oh-so-beautiful in this grey chiffon gown.

Edie Falco At The Screen Actors Guild Awards 2015

Edie Falco, like many other A-listers at this year's SAG awards, went for a bold scarlett look.  Finishing the outfit with a matchy-matchy red clutch.

Felicity Huffman At The Screen Actors Guild Awards 2015

Felicity Huffman went for an LBD for her red carpet moment, adding a much-needed hit of sparkle with an embellished neckline.

Jennifer Aniston & Justin Theroux At The Screen Actors Guild Awards 2015

Jennifer Aniston and Justin Theroux pose together ahead of the SAG awards.

Kelly Osbourne At The Screen Actors Guild Awards 2015

Pop star tuned fashion presenter Kelly Osbourne went all out for her red carpet moment, rocking a leopard print assymetric skirt and black top combo.

Maisie Williams At The Screen Actors Guild Awards 2015

Maisie Williams went for a racy red number for her turn on the red carpet, and we couldn't love this look more. Not only is this ladylike number totally perfect for Maisie's figure, but this lacy frock is from one of our favourite online destinations Threefloorfashion.com.

Amy Ryan At The Screen Actors Guild Awards 2015

Amy Ryan went for a vivid fuchsia dress for her red carpet moment, and we think she totally nailed it.

Julianna Margulies At The Screen Actors Guild Awards 2015

Julianna Margulies works a Giambattista Valli cobalt blue gown, complete with Jimmy Choo heels for her SAG appearance.

Andrea Riseborough At The Screen Actors Guild Awards 2015

Andrea Riseborough proved that pastel hues work oh-so-well for red carpet dressing in this ruffle-neck gown.

Amanda Peet At The Screen Actors Guild Awards 2015

Amanda Peet dazzled in lilac. We love the contrasting black panels too, creating a clever waist-slimming illusion that looks oh-so-chic.

Rashida Jones At The Screen Actors Guild Awards 2015

Rashida Jones proved that floral very much hold a place in event dressing, opting for a plunging gown by Emanuel Ungaro.

Sarah Hyland At The Screen Actors Guild Awards 2015

Sarah Hyland went all out glam for her red carpet moment, and we're glad she did for we are all kinds of in love with this super-beautiful frock.

Julia Louis-Dreyfus At The Screen Actors Guild Awards 2015

Julia Louis-Dreyfus wowed in black lace, proving the black is anything but boring.

Sophia Turner At The Screen Actors Guild Awards 2015

Sophia Turner opted for a chic black assymetric frock for her turn on the red carpet. Top marks for the side-swept blow dry, too.

Caitriona Balfe At The Screen Actors Guild Awards 2015

Caitriona Balfe went for full on red carpet drama with this tangerine frock, and we think she totally nailed it.

Kaley Cuoco At The Screen Actors Guild Awards 2015

Kaley Cuoco stepped out in a striking Romona Keveza bandeau gown at this year's SAG awards. The subtle waist belt and metallic accessories totally maketh the outfit, too.

Rebecca Gayheart At The Screen Actors Guild Awards 2015

Rebecca Gayheart was a vision in blue in this beautiful drape-front gown. Adding extra glam points to this stylish look, Rebecca went for a vibrant lip and of-the-moment top knot.

Sarah Paulson At The Screen Actors Guild Awards 2015

Sarah Paulson gace us all a lesson in how to nail monochrome for eveningwear. Plus, the contrasting clutch is an unexoected, but totally perfect accessory for this winning look.

Matthew McConaughey & Camila Alves At The Screen Actors Guild Awards 2015

Matthew McConaughey & Camila Alves pose together on the red carpet ahead of the Screen Actors Guild Awards.

Phyllis Logan & Sophie McShera At The Screen Actors Guild Awards 2015

Phyllis Logan & Sophie McShera step out on the red carpet.

Keira Knightley & James Righton At The Screen Actors Guild Awards 2015

Keira Knightley and James Righton step out together ahead of the Screen Actors Guild Awards.

Keira Knightley At The Screen Actors Guild Awards 2015

Keira Knightley and James Righton step out together ahead of the Screen Actors Guild Awards.

Sophia Vergara At The Screen Actors Guild Awards 2015

Sophia Vergara looks racy in red Donna Karan Atelier for her moment on the SAG red carpet.

Adrien Brody At The Screen Actors Guild Awards 2015

Adrien Brody broke all the suiting rules, stepping out in this metallic number. A bit of menswear inso for all those Grooms-to-be, we think.

Emilia Clarke At The Screen Actors Guild Awards 2015

Emilia Clarke worked this classic black floor-grazing number, complete with contrasting navy neckline, that we are totally loving.

Kit Harington At The Screen Actors Guild Awards 2015

Brit actor and Game Of Thrones Star Kit Harington flew the flag for smart mens style at this year's SAG awards, keeping his look classic in this smart tuxedo.

Kevin Costner & Christine Baumgartner At The Screen Actors Guild Awards 2015

Kevin Costner & Christine Baumgartner pose together ahead of the Screen Actors Guild Awards, 2015.

Ariel Winter At The Screen Actors Guild Awards 2015

Ariel Winter was another star who favoured the white gown for this year's SAG awards, and we think she made the right choice, for this frock shows off those enviable curves and brunette locks perfectly.

Keira Knightley & James Righton At The Screen Actors Guild Awards 2015

Proud parents-to-be Keira Knightley and husband James Righton look the picture of happiness on the red carpet.

Sophia Vergara & Reece Witherspoon At The Screen Actors Guild Awards 2015

Sophia Vergara & Reece Witherspoon pose together ahead of the SAG awards.

Edie Falco & Julianne Moore At The Screen Actors Guild Awards 2015

Edie Falco & Julianne Moore work the red carpet like pros.

Lenny Kravitz At The Screen Actors Guild Awards 2015

Lenny Kravitz looks as cool as ever for his moment on the red carpet, opting for top-to-toe black, complete with signature black sunnies.

Joe Manganiello & Sofia Vergara At The Screen Actors Guild Awards 2015

Joe Manganiello & Sofia Vergara pose for the cameras on the red carpet.

Paula Patton At The Screen Actors Guild Awards 2015

Paula Patton also favoured the white frock for her SAG awards appearance, working an embellished Aiisha Ramadan gown.

Keira Knightley At The Screen Actors Guild Awards 2015

Julie Bowen At The Screen Actors Guild Awards 2015

Julie Bowen looks angelic in this beautiful blush gown. Top marks for the delicate embroidery detailing and matching box clutch bag.

Allen Leech & Charlie Webster At The Screen Actors Guild Awards 2015

Allen Leech & Charlie Webster pose on the Screen Actors Guild red carpet.

Gwendoline Christie At The Screen Actors Guild Awards 2015

Gwendoline Christie went for full on red carpet drama for her red carpet moment, opting for this bold plungin frock. And we think she totally nailed it.

Ellar Coltrane At The Screen Actors Guild Awards 2015

Boyhood star Ellar Coltrane wowed in his top-to-toe black suit look.