Gigi and Bella have several other siblings, including brother Anwar Hadid, Mohamed and Yolanda's youngest child. They also have two older half-sisters — Marielle and Alana Hadid — who Mohamed welcomed with his first wife, Mary Butler.

We have appreciated this unexpected and wonderful addition to our family,” the supermodel sisters said of 23-year-old Aydan Nix, their father's daughter with Terri Hatfield Dull.

Gigi and Bella also have two older half-sisters from their father's first marriage, Marielle and Alana Hadid. In July 2023, the family got together to celebrate Alana's 40th birthday in Los Angeles. From their parents to their newfound sister, here's everything to know about Gigi Hadid and Bella Hadid's family.