The Met Gala in New York has been the scene of a multitude of unforgettable appearances by Dior-wearing names over the years. As we get ready to cover this year's prestigious event - celebrating the exhibition 'In America: A Lexicon of Fashion' - we offer you a look back over past years that featured Dior creations on such stars as Gisele Bündchen, Charlize Theron, Jennifer Lawrence, Cara Delevingne, Diana, Princess of Wales and Isabelle Huppert.