Princess Diana arriving at the Serpentine Gallery on June 29th, 1994. That same night, Charles sat down for a televised documentary and admitted on camera that he had been unfaithful to her. Elegant White Sweetheart Tulle Appliques Sheath Prom Dress with Oversk Dbrbridal On June 29, 1994, amid the shock of Prince Charles's televised confession of infidelity, Princess Diana made a bold statement. Ditching her planned Valentino gown, she emerged at a Serpentine Elegant White Off Shoulder Evening Prom Dress Mislish Fashion's Hall of Fame: Princess Diana's Revenge Dress Chic Elegant A line Strapless Ivory Long Prom Dresses Thigh Split Even SELINADRESS