Britain's Queen Elizabeth (L) embarks, with Prince Philip (rear L), Prince Charles (R) and Camilla, Duchess of Cornwall, from Chelsea Harbour to join the pageant on the River Thames, in London June 3, 2012. Britain's Queen Elizabeth joined an armada of 1,000 boats in a gilded royal barge, in a pageant down the River Thames on Sunday in a spectacular highlight of four days of nationwide celebrations to mark her Diamond Jubilee. [Photo/Agencies]