Prince Charles And Princess Diana Arriving At The Cannes Film Festival For A Gala Night In Honour Of  Actor Sir Alec Guinness.  The Princess Is Wearing A Pale Blue Silk Chiffon Strapless Dress With A Matching Chiffon Stole Designed By Fashion Designer Catherine Walker. They Are Greeted By The Lady Mayor Of Cannes.  (Photo by Tim Graham Photo Library via Getty Images)