Britain's Catherine, Duchess of Cambridge (2nd L), stands next to Princes Harry (L) and William (3rd L) and Queen Elizabeth (R), onboard the Spirit of Chartwell during the Queen's Diamond Jubilee Pageant on the River Thames in London June 3, 2012. Britain's Queen Elizabeth joins an armada of 1,000 boats in a gilded royal barge on Sunday in a spectacular highlight of four days of nationwide celebrations to mark her 60th year on the throne.  [Photo/Agencies]