Model Gigi Hadid celebrated her 21st birthday on Thursday night with a star-studded bash at The Nice Guy Restaurant in Los Angeles. Taylor Swift's Girl Squad was out in full effect, with some new additions that included Hadid's supermodel BFF Kendall Jenner, Kylie Jenner, Kourtney Kardashian, Khloé Kardashian, Lily Aldridge, Jaden Smith and tons more.

For the occasion, the birthday girl wore a pair of high-waisted shorts and a silk black camisole that was long in the back and came down to the floor. The model accessorized with a pair of thigh-high boots, a black choker and pulled her hair back in a messy ponytail. Hadid was seen entering the party with Kendall, 20, who wore matching high-waisted pants and a long blazer with a see-though bra that exposed her nipple piercing.

A photo posted by Taylor Swift (@taylorswift) on Apr 29, 2016 at 1:25am PDT

All of the famous guests were sure to document the party on social media. The Kardashian/Jenner girls made sure to record the entire night on their Snapchats, with Khloé revealing she fell and hurt her leg before the birthday party.

"I need to know if this is thirsty," Khloé asked her fans on Snapchat. "So last night I fell down my stairs and I really hurt my leg. My leg is really swollen now and it's kind of hard to walk, but I'm supposed to go to a birthday party with me and all my sisters and I have FOMO. I really want to go, but is it so thirsty because my leg hurts and I probably should be icing it and probably should be staying home?"

Hadid's boyfriend, former One Direction star Zayn Malik, also attended the event but was a little late. Once he arrived at the venue, the British singer sat at his girlfriend's table and partied the night away. The couple previously celebrated Hadid's birthday, which was on April 23, at Disneyland.

"Zayn showered Gigi with flowers and presents for her birthday. He was very thoughtful with what presents he got her," a source at the party said. "Gigi really wanted to see Zayn on her special day and he made it happen. They had a few hours of alone time."

"When they are not traveling they are always together," the insider added.

Hailee Steinfeld, Lenny Kravitz, John Mayer, Naomi Campbell, Ashlee Simpson and Evan Ross were all also spotted at the party.

A photo posted by Gigi Hadid (@gigihadid) on Apr 29, 2016 at 2:43am PDT

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