Stars With SECRET SIBLINGS

Surprise! Gigi and Bella Hadid have a 23-year-old half sister, Aydan Nix.

- 

The supermodels confirmed on May 29 that their dad, Mohamed, “had a brief relationship” with a woman named Terri Hatfield Dull after his 2000 divorce from their mom, Yolanda, “that led to a pregnancy.” Nix was born in Florida and had been unaware that the man who raised her was not her biological father until he died when she was 19. “Aydan found out the news from doing one of those Ancestry DNA tests,” an insider tells Us, “and connected the dots and reached out to Mohamed,” who also shares son Anwar, 25, with Yolanda and daughters Marielle, 44, and Alana, 39, with first wife Mary Butler.

“It was a complete shock to the whole family,” the insider says, noting that the kids had “a lot of questions” for Mohamed, 76, but “have tried not to pass judgment.” Gigi, 30, and Bella, 28, told the