FILE - In this July 29, 1981 file photo, Prince Charles and his bride Diana, Princess of Wales, and his parents, Queen Elizabeth II and Prince Phillip, wave from the balcony of Buckingham Palace in London after their marriage at St. Paul's Catheral. Starting Saturday, June 2, 2012, Queen Elizabeth II begins a four-day celebration of her 60 years on the throne. (AP Photo, File)