CALGARY, AB - JULY 07: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge arrive at Calgary Airport on July 7, 2011 in Calgary, Canada. The newly married Royal Couple are on the eighth day of their first joint overseas tour. The 12 day visit to North America is taking in some of the more remote areas of the country such as Prince Edward Island, Yellowknife and Calgary. The Royal couple started off their tour by joining millions of Canadians in taking part in Canada Day celebrations which mark Canada's 144th Birthday. (Photo by Chris Jackson/Getty Images)
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CALGARY, AB, CANADA - JULY 07: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge are presented with Smithbilt cowboy hats after arriving at Calgary International Airport on July 7, 2011 in Calgary, Alberta, Canada. The newlywed royal couple are on their eighth day of their first joint overseas tour visiting Canada and the United States. The 12 day visit to North America is taking in some of the more remote areas of the country such as Prince Edward Island, Yellowknife and Calgary. (Photo by Ian Vogler - WPA Pool/Getty Images)
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CALGARY, AB - JULY 07: CALGARY, AB - JULY 07: Catherine, Duchess of Cambridge speaks with 6 year old terminal cancer sufferer Diamond at Calgary Airport on day 8 of the Royal couple's tour of North America on July 7, 2011 in Calgary, Canada. (Photo by Samir Hussein/WireImage)
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CALGARY, AB - JULY 07: CALGARY, AB - JULY 07: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge speak with 6 year old terminal cancer sufferer Diamond at Calgary Airport on day 8 of the Royal couple's tour of North America on July 7, 2011 in Calgary, Canada. (Photo by Samir Hussein/WireImage)
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Catherine, Duchess of Cambridge arrive at the Calgary International Airport on July 7, 2011 in Calgary, Canada.
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