Caitlyn Jenner Shared the Most Adorable Throwback Pic of Kendall for Her Birthday

Plus, how her friends and family celebrated her day.
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PARIS, FRANCE - OCTOBER 03: Kendall Jenner attends the Vogue 95th Anniversary Party : Photocall as part of the Paris Fashion Week Womenswear Spring/Summer 2016 on October 3, 2015 in Paris, France. (Photo by Dominique Charriau/WireImage)Photo: WireImage

A philosophical question for the ages: if you have a birthday, but nobody wishes you a happy one on social media, did you even have a birthday at all? (That answer is yes, but bear with us here.) When you're a celebrity with a massive — read: in the millions — social media following, it's a given that some of your nearest and dearest and equally as famous friends will shout you out and offer their best wishes for the world to see. Kendall Jenner is no different. Here's a roundup of how her famous friends celebrated her birthday.

Caitlyn Jenner offered up the cutest photo of Kendall from her younger years.

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And Kris Jenner offered this side-by-side comparison in purple.

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While big sisters Kim and Khloé offered up their own memories with their little sister.

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Kylie used the moment to debut — what else? — a new hairdo.

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BFF Gigi Hadid gave her a shoutout in a very unique way.

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Godmother Kathie Lee Gifford shared her wishes for her goddaughter.

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Olivier Rousteing also shouted out to his muse.

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As did Marc Jacobs.

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Hailey Baldwin and Kendall made a Drake sandwich.

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And Drake decided to use the night to make plans — big ones.

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And Victoria's Secret got in on the action...in their own way. (Um, best gift ever? We think so.)

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Related: Kendall Wore a Very Chic Birthday Suit — Jumpsuit, That Is

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