Prince Charles and Princess Diana embrace for an informal portrait on their wedding day in this July 29, 1981 file photo.
Diana, Princess of Wales, accompanied by her son Prince William (R), is seen arriving at Wimbledon''s Centre Court before the start of the Women''s Singles final in London in this July 2, 1994 file photograph.
Diana, Princess of Wales and her eldest son Prince William are seen waiting for Prince Harry after attending the annual Easter Sunday church service at St.Georges Chapel inside Windsor Castle, west of London in this April 19, 1992 file photograph.
Prince Charles and Princess Diana stand on the balcony of Buckingham Palace in London, following their wedding at St. Pauls Cathedral, in this June 29, 1981 file photo.
Auctioneer Kerry Taylor arranges the silk wedding dress calico prototype for Princess Diana, which is displayed at Sotheby''s auction house in Paris May 17, 2010.
Diana, Princess of Wales (R) turns and laughs with former French President Valery Giscard d''Estaing, in this November 28, 1994 file photo where the two attended the theatre and dinner at the Chateau de Versailles.
The Dendrobium memoria Princess Diana orchid at the Singapore Botanical Garden.