The "Grand Duchess Vladimir" tiara from 1890 is displayed at Buckingham Palace in London July 23, 2010. The tiara forms part of an exhibition entitled "The Queen's Year" for the Summer Opening of a Buckingham Palace exhibition which runs from July 27-October 1. (Xinhua/Reuters Photo)
A curator poses for photographs with a collection of hats worn to Royal Ascot by Britain's Queen Elizabeth, at Buckingham Palace in London July 23, 2010. The hats form part of an exhibition entitled "The Queen's Year" for the Summer Opening of Buckingham Palace exhibition which runs from July 27-October 1. (Xinhua/Reuters Photo)