LONDON, ENGLAND - JUNE 05: Prince William, Duke of Cambridge, Prince Harry and Catherine, Duchess of Cambridge on the balcony of Buckingham Palace after the service of thanksgiving at St.Paul’s Cathedral on June 5, 2012 in London, England. For only the second time in its history the UK celebrates the Diamond Jubilee of a monarch. Her Majesty Queen Elizabeth II celebrates the 60th anniversary of her ascension to the throne. Thousands of wellwishers from around the world have flocked to London to witness the spectacle of the weekend's celebrations. (Photo by Oli Scarff/Getty Images)