OTTAWA, ON - JUNE 30:  Catherine, Duchess of Cambridge on a walkabout outside the official residence of the Governor General of Canada, Rideau Hall on June 30, 2011 in Ottawa, Canada. The newly married Royal Couple have arrived in Canada today for their first joint overseas tour. Ottawa is the start of a 12-day visit to North America which will take in some of the more remote areas of the country such as Prince Edward Island, Yellowknife and Calgary. The Royal couple will also join millions of Canadians to take part in tomorrow's Canada Day celebrations which mark Canada's 144th Birthday.  (Photo by John Stillwell-Pool/Getty Images)