Previously unreleased photo and taken on

Previously unreleased photo and taken on May 31, 2012 shows the ivory dress and coat, in white Boucle fabric and threaded throughout with silk ribbon, designed by Miss Angela Kelly MVO, which Queen Elizabeth II wears for the Diamond Jubilee river Pageant in London on June 3, 2012. The Boucle has been embroidered with gold, silver and ivory spots and embellished with Swarovski crystals to reflect the River Thames, the outfit is finished with a silk organza frill. The Queen's hat has a swept up brim, the crown of which is made of the same material as the coat and details include feathers hand dyed in Buckingham Palace by one of Angela Kelly's team. Britain is celebrating the diamond jubilee of Queen Elizabeth II, marking 60 years on the throne during which she has set a number of landmarks. One million people are expected to line the river to see the extravaganza of steam boats and tugs, speed boats and historic vessels. AFP PHOTO POOL / LEWIS WHYLD (Photo credit should read LEWIS WHYLD/AFP/GettyImages)