November 20, 1994: File photo of Diana, Princess of Wales, wearing a black dress, commissioned from Christina Stambolian, attends the Vanity Fair party at the Serpentine Gallery in 1994. The famous black dress was worn on the same evening that Prince Charles made his notorious adultery admission on television. in London, UK., Image: 140655223, License: Rights-managed, Restrictions: , Model Release: no, Credit line: Zak Hussein / INSTAR Images / Profimedia