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LONDON, ENGLAND - JUNE 11: (L-R) Lady Gabriella Windsor, Lord Frederick Windsor, Sophie Winkleman, Princess Michael of Kent, Prince Michael of Kent, Sophie, Countess of Wessex, James, Viscount Severn, Lady Louise Windsor, Prince Edward, Earl of Wessex, Prince Harry, Camilla, Duchess of Cornwall, Catherine, Duchess of Cambridge, Princess Beatrice and Prince Andrew, Duke of York attend Trooping the Colour, this year marking the Queen's 90th birthday at The Mall on June 11, 2016 in London, England. The ceremony is Queen Elizabeth II'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 Ben A. Pruchnie/Getty Images)