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LONDON - JUNE 13: (L-R) Prince William, Camilla, Duchess of Cornwall, Prince Edward, Earl of Wessex, Sophie, Countess of Wessex with daughter Lady Louise Windsor and Prince Harry look on from the balcony of Buckingham Palace during Trooping The Colour on June 13, 2008 in London, England. Trooping The Colour is the Queen's annual birthday parade and dates back to the time of Charles II in the 17th Century when the colours of a regiment were used as a rallying point in battle. (Photo by Samir Hussein/WireImage)

LONDON - JUNE 13: (L-R) Prince William, Camilla, Duchess of Cornwall, Prince Edward, Earl of Wessex, Sophie, Countess of Wessex with daughter Lady Louise Windsor and Prince Harry look on from the balcony of Buckingham Palace during Trooping The Colour on June 13, 2008 in London, England.  Trooping The Colour is the Queen's annual birthday parade and dates back to the time of Charles II in the 17th Century when the colours of a regiment were used as a rallying point in battle. (Photo by Samir Hussein/WireImage)