It would appear Gigi Hadid is making the most of turning 21 given she's been celebrating her birthday since last weekend (her actual birth date is April 23rd). She kicked things off by hitching a lift to Coachella in Taylor Swift's private jet, whereupon she was presented with a birthday cake at several thousand feet... 

Then she extended her time 'thirdwheeling' with Swift and boyfriend Calvin Harris all on her "birthday weekend."

Last night, the never ending onslaught of birthday celebrations continued unabated with a bash in LA, at Piccolino in Hollywood. While Zayn didn't appear to be there, the likes of Hailey Baldwin, Lily Aldridge, Kendall Jenner, Kylie Jenner, Khloe Kardashian, Jaden Smith, Taylor Swift, avec Haim Sisters all rocked up to the venue dressed to the nines. 

Then the social media frenzy commenced...
 


Taylor was especially fond of the photo booth, and made full use of it...
 

 

This is what you came for. @gigihadid @lilyaldridge

A photo posted by Taylor Swift (@taylorswift) on


 

We go fast with the game we play. @haimtheband @lilyaldridge

A photo posted by Taylor Swift (@taylorswift) on

 

We say nothing more than we need. @haimtheband @lilyaldridge

A photo posted by Taylor Swift (@taylorswift) on

 

She obviously wasn't the only one...