Bella’s older sister Gigi, who wrote "I know all the bday surprises you don't knowwww" on a video of her younger sister smiling before the event, was at the extravagant New York bash along with brother Anwar Hadid, parents Yolanda and Mohamed Hadid, and BFFs Kendall Jenner, Jaden Smith, and Justine Skye, and of course her on-again musician beau The Weeknd.
It seems the party might have been a surprise for the 22-year-old with Bella screaming as she walked into the room.
The fashion-forward model wore a corset, almaz ripped trousers, a Chanel belt and adorned herself in multiple diamond rings, bracelets and choker, instantly lifting her monochrome outfit and proving that diamonds are a girl's best friend.
The venue was dream-like with a red and white colour theme and fairy lights, with Bella's five-tier birthday cake adorned with colourful butterflies and flowers.
Gigi Hadid posted a sweet tribute to her baby sister saying "witnessing you shine and share your loving light with the world fills me with pride, and I become more grateful each year for what a true friend you are to me. I love you beyond words my butterfly angel. Happy day, happy year - you deserve the best always !!!!!! 🎂🌶🦋⚡️💎 "
Below, see all the insider snaps from the night.