People: Simone Biles' Wedding Dress Designer on Her Princess Ball Gown: 'She Didn't Think It Was Going to Work' Simone Biles' Wedding Dress Designer on Her Princess Ball Gown: 'She Didn't Think It Was Going to Work' The fashion designer tells PEOPLE that the gold medalist was doubtful she could wear a ball gown for her big day, until Lahav convinced her otherwise: "I love that we could surprise her" Simone Biles ...