Guests at Monday's bash took to social media to post pictures and videos from inside the party. Hailey shared pictures from the party's photo booth with her social media followers.
"Happy birthday Gi we love you," Hailey captioned one picture.
Each of the photo booth pics had "Gigi's Golden Birthday" written on them to mark the special occasion.
Antoni shared pictures from the party which show him hanging with JVN, Tan, Cara, Suki and Bella.
In a video he posted to his Instagram Story, we can see that at one point in the party, Gigi was presented with a cake in the shape of a jersey.
The cake had "G. Hadid" written on it with Gigi's favorite number, 23, also written on it.
One person not spotted at the party was Gigi's ex, Zayn Malik. The duo called it quits in March after two years of dating.
"Gigi and I had an incredibly meaningful, loving and fun relationship and I have a huge amount of respect and adoration for Gigi as a woman and a friend. She has such an incredible soul," Zayn tweeted on March 13. "I'm grateful to all of our fans for respecting this difficult decision and our privacy at this time. We wish this news would have come from us first. We love you all."
Gigi also confirmed the news on social media.
"Breakup statements often seem impersonal because there is really no way to put into words what two people experience together over a few years..not only in a relationship but in life in general," she wrote. "I'm forever grateful for the love, time and life lessons Z and I shared. I want nothing but the best for him and will continue to support him as a friend that I have immense respect and love for. As for the future, whatever's meant to be will always be. x G."