The Duchess of Cambridge turns 37

The Duchess of Cambridge turns 37

The little princess, who's set to turn four on May 2, absolutely loves the arts, so it's no surprise that she'd love to look at drawings created for her mom.

Here at ET, we're honoring the mother of three by breaking down her best style looks from the past year.

Kate Middleton is believed to be celebrating her birthday in private with family. Yes, Kate's into theme parties!

And if her past gifts are anything to go by, this year Kate can expect a piece which is elegant, sentimental and carefully thought-out by her other half. Almost 20-years after the paparazzi-induced death of William's late mother, the prince released a statement via Clarence House encouraging the press to leave his girlfriend alone.

For their third anniversary, it was reported that the Prince gave Kate a Ballon Bleu de Cartier watch bearing a sapphire to match her engagement ring and earrings.

A year ago the heavily pregnant Duchess spent the day with her family at Kensington Palace.

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During the event William was given a card to mark his wife's birthday, to which he said: "I did remember this morning - so I was OK".

The Daily Express reports that while William is working, Middleton will celebrate with their three children: George, 5, Charlotte, 3, and Louis, 8 months.

2015: Pregnant (again), Kate spent another quiet birthday at home. "The Duchess undertakes royal duties in support of The Queen, both in the United Kingdom and overseas - and devotes her time to supporting charitable causes and organisations, several of which are centered around providing children with the best possible start in life".

2017: Again, Middleton celebrated 35 outside of the spotlight at her Norfolk home. Following in the footsteps of her older brother Prince George, Charlotte takes weekly dance lessons.

Happy birthday, Kate! Enjoy your time away from the spotlight, no matter how brief.