AP Photo/The Canadian Press/Nathan Denette
Prince William and his wife, Kate, the Duke and Duchess of Cambridge take part in an northern activities in Lake Blatchford, Northwest Territories, Canada, on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and his wife, Kate, the Duke and Duchess of Cambridge, take part in an northern activities in Lake Blatchford, Northwest Territories, Canada, on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and wife Kate, the Duke and Duchess of Cambridge examine at a knife received as a gift at Lake Blatchford, Canada, on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William, and his wife, Kate, the Duke and Duchess of Cambridge laugh with Canadian Defense Minister Peter McKay, back center, and Canadian Health Minister Leona Aglukkaq, left, as the royal couple look at animal fur used for clothing at Lake Blatchford Lake, Northwest Territories, Canada, on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and wife Kate, the Duke and Duchess of Cambridge, right, carry a caribou skin to smoke it at Lake Blatchford, Northwest Territories, Canada, on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and wife Kate, the Duke and Duchess of Cambridge, right, carry a caribou skin to smoke it at Lake Blatchford, Northwest Territories, Canada, on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and wife Kate, the Duke and Duchess of Cambridge, take a canoe ride with elder Francois Paulette, left, from the Fort Smith area at Lake Blatchford, Northwest Territories, Canada, on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and wife Kate, the Duke and Duchess of Cambridge, take a canoe ride at Lake Blatchford, Northwest Territories, Canada, on Tuesday, July 5, 2011.
ANDY CLARK/AFP/Getty Images
Prince William and his wife, Kate, Duchess of Cambridge, wear the sweaters of the Canadian Rangers after being made honourary members during a visit to Blatchford Lake, Northwest Territories, Canada, July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William, center, and his wife Kate, the Duke and Duchess of Cambridge, adjust their Canadian ranger sweaters before a photo opportunity as they take part in northern activities at a Blatchford Lake, Northwest Territories, Canada, on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and wife Kate, the Duke and Duchess of Cambridge, rest and have some arctic char with Defense Minister Peter McKay along with Canadian Rangers at Lake Blatchford, Northwest Territories, Canada, on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and wife Kate, the Duke and Duchess of Cambridge. walk with Canadian Rangers at Lake Blatchford, Northwest Territories, Canada, on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and his wife, Kate, the Duke and Duchess of Cambridge, are seen boarding a floatplane in Yellowknife, Northwest Territories, Canada, Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William, and his wife, Kate, the Duke and Duchess of Cambridge, greet their admirers in Yellowknife, Northwest Territories on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William, and his wife, Kate, the Duke and Duchess of Cambridge, greet admirers in Yellowknife, Northwest Territories on Tuesday, July 5, 2011.
ANDY CLARK/AFP/Getty Images
Prince William takes a picture of a group of children during a visit to the Somba K'e Civic Plaza in Yellowknife, Northwest Territories, July 5, 2011.
ANDY CLARK/AFP/Getty Images
Catherine, the Duchess of Cambridge, greets the crowd as security stays close during her visit with Prince William to the Somba K'e Civic Plaza in Yellowknife, Northwest Territories, on July 5, 2011.
ANDY CLARK/AFP/Getty Images
Britain's Prince William and his wife Catherine, the Duchess of Cambridge, are shown some native drumming during a visit to the Somba K'e Civic Plaza in Yellowknife, Northwest Territories July 5, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and wife Kate, the Duke and Duchess of Cambridge watch aboriginal drummers play during a stop in Yellowknife, Northwest Territories, Canada on Tuesday, July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and wife Kate, the Duke and Duchess of Cambridge, laugh as they receive Team Canada hockey jerseys as they take part in a ball hockey event in Yellowknife, Northwest Territories, Canada, on July 5, 2011.
TIMOTHY A. CLARY/AFP/Getty Images
Kate, Duchess of Cambridge, looks on as Prince William plays street hockey during an event at the Somba K'e Civic Plaza in Yellowknife, Northwest Territories, Canada, on July 5, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William, right, takes a shot on a goaltender during a game of street hockey in Yellowknife, Northwest Territories, Canada, on July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Kate, Duchess of Cambridge, drops the ball during a game of street hockey in Yellowknife, Northwest Territories, Canada, on Tuesday, July 5, 2011.
Getty Images
Prince William and Kate, the Duke and Duchess of Cambridge, greet hockey players during a visit to the Somba K'e Civic Plaza on July 5, 2011, in Yellowknife, Northwest Territories, Canada.
AP Photo/The Canadian Press/Nathan Denette
Prince William and wife Kate, The Duke and Duchess of Cambridge, meet with people as they take part in northern activities in Yellowknife, Northwest Territories, in Canada on July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Kate, Duchess of Cambridge, meets with people as she and Prince William take part in northern activities in Yellowknife, Northwest Territories, Canada on July 5, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and wife Kate, the Duke and Duchess of Cambridge, watch as a aboriginal youth performs a traditional game in Yellowknife, Northwest Territories, Canada, Tuesday, July 5, 2011.
Phil Noble/Pool/Getty Images
Prince William, Duke of Cambridge, and his wife, Kate, Duchess of Cambridge, view a demonstration of Dene games and Arctic sports at the Somba K'e Civic Plaza on July 5, 2011, in Yellowknife, Northwest Territories, Canada.
Phil Noble/Pool/Getty Images
Prince William and wife Kate, the Duke and Duchess of Cambridge, are welcomed during a ceremony at the Somba K'e Civic Plaza on July 5, 2011, in Yellowknife, Northwest Territories, Canada.
Phil Noble/Pool/Getty Images
Prince William and Kate, the Duke and Duchess of Cambridge, are welcomed during a ceremony at the Somba K'e Civic Plaza on July 5, 2011, in Yellowknife, Northwest Territories, Canada.
Phil Noble/Pool/Getty Images
Prince William, Duke of Cambridge, and his wife, Kate, Duchess of Cambridge, greet local residents dressed in traditional native clothing on July 5, 2011, in Yellowknife, Northwest Territories, Canada.
Phil Noble/Pool/Getty Images
Kate, Duchess of Cambridge, right, greets a girl during a walkabout as she visits the Somba K'e Civic Plaza with her husband, Prince William, on July 5, 2011, in Yellowknife, Northwest Territories, Canada.
AP Photo/The Canadian Press/Nathan Denette
Prince William and wife Kate, the Duke and Duchess of Cambridge arrive at the civic plaza in Yellowknife, Northwest Territories, Canada, on July 5, 2011.
AP Photo/The Canadian Press/Nathan Denette
Kate, Duchess of Cambridge, arrives at the civic plaza in Yellowknife, Northwest Territories, Canada, on Tuesday, July 5, 2011.
Phil Noble/Pool/Getty Images
Prince William and wife Kate, the Duke and Duchess of Cambridge, follow a bagpiper as they arrive at the Somba K'e Civic Plaza on July 5, 2011, in Yellowknife, Northwest Territories, Canada.
AP Photo/Charlie Riedel
Prince William and Kate, the Duke and Duchess of Cambridge, walk off their plane after arriving at the airport in Yellowknife, Canada as they continue their Royal Tour of Canada on July 4, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and Kate, the Duke and Duchess of Cambridge, receive flowers from Marco Paol Esteba, right, and Amelie Wood, both 8, in Yellowknife, Northwest Territories, on Monday July 4, 2011, as they continue their tour of Canada.
AP Photo/The Canadian Press/Nathan Denette
Prince William and his wife, Kate, The Duke and Duchess of Cambridge, arrive in Yellowknife, the capital of the Northwest Territories, on July 4, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and Kate, the Duke and Duchess of Cambridge, arrive in Yellowknife, Northwest Territories, on Monday July 4, 2011, as they continue their tour of Canada.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and Kate, the Duke and Duchess of Cambridge, arrive in Yellowknife, Northwest Territories, on Monday July 4, 2011, as they continue their tour of Canada.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and Kate, the Duke and Duchess of Cambridge, arrive in Yellowknife, Northwest Territories on July 4, 2011, as they continue their tour of Canada.