Members of the royal family stand on the balcony of Buckingham Palace during the Trooping the Colour on June 13, in London -- from left, Camilla, Duchess of Cornwall; Prince Charles, Prince of Wales; Prince George of Cambridge; Prince William, Duke of Cambridge; Catherine, Duchess of Cambridge; Queen Elizabeth II; Prince Harry; and Prince Philip, Duke of Edinburgh. The ceremony is the British monarch's annual birthday parade and dates back to the time of Charles II in the 17th century, when the colors of a regiment were used as a rallying point in battle. The Queen's actual birthday is April 21.
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