Get a Glimpse Inside Gigi Hadid's 21st Birthday Bash in Vegas

There's no question that Gigi Hadid has been ringing in her 21st birthday in style. Although the supermodel's actual birthday is on April 23, she hosted two big parties to celebrate the milestone, starting with a bash on April 28 at The Nice Guy in LA surrounded by her closest celebrity friends. Gigi's boyfriend, Zayn Malik, didn't arrive until later, but the star-studded guest list included Taylor Swift, Kendall Jenner, Naomi Campbell, Lenny Kravitz, Kourtney Kardashian, and more. Two days later, she headed to Las Vegas to party the night away at Mizumi at Wynn Las Vegas, where she wore a plunging, printed minidress, ate sushi, and posed for pictures next to her massive birthday cake. Check out all of the best moments from both parties ahead, and then see why Gigi and Kendall are such cute BFFs!