Gigi Hadid, who's spent a full week celebrating her 21st birthday (a Hadid family lunch! Beach day with boyfriend Zayn Malik! Coachella concert with Taylor Swift and Calvin Harris!) finally had the blowout party to cap off the festivities. The shindig went down at Los Angeles' Nice Guy and included a photo booth (a Taylor/Kardashian party standby), ridiculously A-list company, and one last cake with Gigi's face on it.

Gigi arrived with Kendall Jenner, wearing hot pants and insane boots:

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Kendall was in a sheer bra. Hailey Baldwin had amusing commentary on it, documented by Kylie:

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Taylor, Zayn, Naomi Campbell, Khloé and Kourtney Kardashian, Jaden Smith, Lily Aldridge, and so many more were there to celebrate.

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Gigi left cuddled up with Zayn

Taylor was in the most sparkly dress and got to meet Gigi's high school BFF:

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Nice Guy itself was decked in Gigi balloons. 

And the photo booth appeared to be everyone's favorite (when is it not, though?):

(Taylor even found a way to plug her boyfriend's new song, "This Is What You Came For," with it.)

Gigi got to blow out the candles on her seventh cake, the fanciest and most personalized of them all:

Her face says everything:

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