Britain's Prince Charles (front row, L-R), Queen Elizabeth and Camilla, Duchess of Cornwall, stand in the royal box at the Coronation Festival Evening Gala at Buckingham Palace in central London July 11, 2013. The four-day Coronation Festival which includes tonight's musical gala, takes place in the Gardens of Buckingham Palace and celebrates the 60th anniversary of Queen Elizabeth's coronation. [Photo/Agencies]