Princess Charlotte's most adorable moments that'll make your heart melt

Our hearts can't take this much cuteness.

We've got a soft spot for the royal family's second littlest member. Princess Charlotte has just turned three years old today and she's made every royal appearance better since she joined Kate Middleton and Prince William's growing brood. With a gorgeous smile, signature little wave and occasionally a sulky face straight out of her older brother George's handbook, she's captured hearts across the world and with good reason.

While Kate Middleton usually snaps a photograph of Charlotte on her birthday, this year the royals have chosen not to release a new picture - presumably since she's all tied up with the birth of their newest child Prince Louis.

A royal expert also revealed to ELLE, 'William and Kate won't want to overexpose their children. They have never been entirely conventional so I imagine they might release a photo in their own time, and it might be one Kate takes herself. A photo to commemorate the new baby's birth is hardly excessive however, and I would say, for historical purposes, it is important for there to be one.'

While we won't get a brand new photograph this year, we've collected some of Princess Charlotte's best moments over the years below. Beware: dangerous levels of cuteness ahead.

When she waved to the press on the way to meet her new brother Prince Louis.

When her mother Kate Middleton snapped photographs of her on her first day of school.

When she suffered through the annual Christmas card last year.

When a press appearance was just all too much for her in Hamburg.

When she fell in love with her own little bouquet in Berlin.

When she was a bridesmaid at her aunt Pippa Middleton's wedding.

When she posed for a portrait on her second birthday.

When she snuck a sweet treat during a Christmas church service.

When she just couldn't deal with this balloon arch in Victoria.

When the family got together for an autumnal picture.

When her mum took more photographs for her first birthday.

When she and her mum shared an intimate moment during her christening.

And finally, when we were treated to our first ever look at the Princess on the Lindo Wing's steps.

Happy birthday Princess Charlotte!

We can't wait to update this gallery with even more snaps of the princess.