Model Brooke Shields attends the Met Gala’s Yves Saint Laurent Retropspective in New York City on December 6, 1983. Erte’s 90th Birthday Party Image Credit: WWD ...

Gigi Hadid and Bella Hadid revealed that they have a younger sister, 23-year-old Aydan Nix, who they said their dad Mohamed Hadid fathered shortly after his breakup with their mom Yolanda Hadid.