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OTTAWA, ON - JUNE 30: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the wreath laying ceremony at the National War Memorial on day 1 on the Royal Couple's North American Tour on June 30, 2011 in Ottawa, Canada. (Photo by Samir Hussein/WireImage)

OTTAWA, ON - JUNE 30:  Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the wreath laying ceremony at the National War Memorial on day 1 on the Royal Couple's North American Tour on June 30, 2011 in Ottawa, Canada.  (Photo by Samir Hussein/WireImage)