While Gigi Hadid turned the big 2-1 last Saturday, she very fittingly saved the celebration for a #ThirstyThursday blowout in Hollywood. Of course, we can't talk about Gigi without talking about her #Squad, and boy did they all show up. Taylor Swift, Kendall and Kylie Jenner, Kourtney and Khloe Kardashian, Lily Aldridge, and Hailey Baldwin rolled up to hot spot The Nice Guy and weren't afraid to jump in the photo booth throughout the night. But the Girl Gang wasn't alone: Jaden Smith and Gigi's beau Zayn were also in attendance, helping Gigi party into the wee hours. Click through for the photos!