Gigi and Bella Hadid’s recently discovered half-sister, Aydan Nix, is opening up about her growing bond with the supermodels. Gigi, 30, and Bella, 29, announced in May that they have a 23-year-old half-sister, born of a brief relationship their father, Mohamed Hadid, had over 20 years ago with Terri Hatfield Dull. In addition to Aydan, […]

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