Queen Elizabeth and Prince Philip attend Canada Day celebrations in Ottawa during their Royal Tour of Canada

Laureen Harper (Back) accompanies Prince Philip (Middle) while Canada's Prime Minister Stephen Harper looks on as Great Britain's Queen Elizabeth receives flowers from a young member of the Brownies during Canada Day celebrations on Parliament Hill in Ottawa, Ontario, July 1, 2010. The royal couple are on day four of their nine day Royal Tour of Canada. UPI/Heinz Ruckemann