John Stillwell-Pool/Getty Images
Prince William, Duke of Cambridge, and Catherine, Duchess of Cambridge, with Canadian Prime Minister Stephen Harper, attend an informal reception for young Canadian volunteers in Ottawa, Ontario, on Thursday, June 30, 2011.
John Stillwell-Pool/Getty Images
Catherine, Duchess of Cambridge, with Canadian Prime Minister Stephen Harper, right, attends an informal reception for young Canadian volunteers in Ottawa, Ontario, on Thursday, June 30, 2011.
AP Photo/The Canadian Press, Nathan Denette
Prince William and Catherine, the Duke and Duchess of Cambridge meet with people at a youth event in Ottawa, Ontario, on Thursday, June 30, 2011.
AP Photo/The Canadian Press, Nathan Denette
Prince William, the Duke of Cambridge meets with people at a youth event in Ottawa, Ontario, on Thursday, June 30, 2011.
John Stillwell-Pool/Getty Images
Catherine, Duchess of Cambridge attends an informal reception for young Canadian volunteers in Ottawa, Ontario, on Thursday, June 30, 2011.
John Stillwell-Pool/Getty Images
The Duke and Duchess of Cambridge attend an informal reception for young Canadian volunteers in Ottawa, Ontario, on Thursday, June 30, 2011.
AP Photo/The Canadian Press, Nathan Denette
Prince William and Catherine, the Duke and Duchess of Cambridge smile as they meet with people at a youth event in Ottawa, Ontario, on Thursday, June 30, 2011.
AP Photo/The Canadian Press, Sean Kilpatrick
Prince William and wife Catherine, the Duchess of Cambridge, wave to well-wishers as they take part in a ceremony at the National War Memorial in Ottawa, Canada, June 30, 2011. The royal couple arrived to huge crowds and loud cheers in the nation's capital Thursday as the newlyweds begin their first official overseas tour since marrying in April.
AP Photo/The Canadian Press
Prince William and wife Catherine, the Duchess of Cambridge, take part in a ceremony at the National War Memorial in Ottawa, Canada, on their first official overseas trip Thursday, June 30, 2011.
AP Photo/The Canadian Press, Paul Chiasson
Prince William and wife Catherine, the Duchess of Cambridge, and Canada Prime Minister Stephen Harper and his wife, Laureen, take part in a ceremony at the National War Memorial in Ottawa, Canada, June 30, 2011.
AP Photo/The Canadian Press, Paul Chiasson
Prince William and wife Catherine, the Duchess of Cambridge, and Canada Prime Minister Stephen Harper and his wife, Laureen, pause for a moment of silence during a ceremony at the National War Memorial in Ottawa, Canada, June 30, 2011.
AP Photo, The Canadian Press, Paul Chiasson
Prince William and wife Catherine, the Duchess of Cambridge, lay a wreath on the Tomb of the Unknown soldier during a ceremony at the National War Memorial in Ottawa, Canada, June 30, 2011.
(AP Photo/The Canadian Press, Sean Kilpatrick
Prince William and wife Catherine, the Duchess of Cambridge, pause for a moment of silence during a ceremony at the National War Memorial in Ottawa, Canada, June 30, 2011.
AP Photo/The Canadian Press, Sean Kilpatrick)
Catherine, the Duchess of Cambridge, places flowers on the Tomb of the Unknown Soldier as she and Prince William take part in a ceremony at the National War Memorial in Ottawa, Canada, June 30, 2011.
AP Photo/The Canadian Press, Sean Kilpatrick
Catherine, the Duchess of Cambridge, during a ceremony at the National War Memorial in Ottawa, Canada, June 30, 2011.
AP Photo/The Canadian Press, Paul Chiasson
Catherine, the Duchess of Cambridge, and Canada Prime Minister Stephen Harper look on as Prince William, the Duke of Cambridge, signs the veteran memorial book during a ceremony at the National War Memorial in Ottawa, Canada, June 30, 2011.
AP Photo/The Canadian Press, Sean Kilpatrick
Prince William and wife Catherine, the Duchess of Cambridge, talk with veterans as they take part in a ceremony at the National War Memorial in Ottawa, Canada, on their first official overseas trip, June 30, 2011.
AP Photo/The Canadian Press, Paul Chiasson
Catherine, the Duchess of Cambridge, greets the crowd following a ceremony at the National War Memorial in Ottawa, Canada, June 30, 2011.
AP Photo/The Canadian Press, Paul Chiasson
Prince William, the Duke of Cambridge, greets the crowd following a ceremony at the National War Memorial in Ottawa, Canada, June 30, 2011.
AP Photo/The Canadian Press, Frank Gunn
Prince William and wife Catherine, the Duchess of Cambridge, are greeted by Canadian Foreign Affairs Minister John Baird upon their arrival in Ottawa, Canada, on their first official overseas trip, June 30, 2011.
AP Photo/The Canadian Press, Frank Gunn
Prince William, the Duke of Cambridge, is greeted by Canadian Foreign Affairs Minister John Baird upon his arrival in Ottawa, Canada, June 30, 2011.
AP Photo/The Canadian Press, Frank Gunn
Prince William and wife Catherine, the Duchess of Cambridge, arrive in Ottawa, Canada, on their first official overseas trip, June 30, 2011.
AP Photo/The Canadian Press, Frank Gunn
Prince William and wife Catherine, the Duchess of Cambridge, walk down the stairs of their aircraft upon their arrival in Ottawa, Canada, on their first official overseas trip, June 30, 2011.
Chris Jackson/Getty Images
Prince William and wife Catherine, the Duchess of Cambridge, walk down the stairs of their aircraft upon their arrival in Ottawa, Canada, on their first official overseas trip, June 30, 2011.
Chris Jackson/Getty Images
Prince William, unseen, and wife Catherine, the Duchess of Cambridge, walk down the stairs of their aircraft upon their arrival in Ottawa, Canada, on their first official overseas trip, June 30, 2011.
Chris Jackson/Getty Images
Prince William and wife Catherine, the Duchess of Cambridge, walk down the stairs of their aircraft upon their arrival in Ottawa, Canada, on their first official overseas trip, June 30, 2011.
Chris Jackson/Getty Images
Catherine, the Duchess of Cambridge, is given flowers by nine-year-old Kellen Schleyer upon her arrival in Ottawa, Canada, June 30, 2011
Steve Parsons - WPA Pool/Getty Images
Prince William and wife Catherine, the Duchess of Cambridge, walk to board a plane of the Royal Canadian Air Force at Heathrow airport on June 30, 2011, in London. The royal couple left Britain Thursday for Ottawa, the first stop in their first official overseas trip as a married couple. Their 11-day North America tour will take them across Canada and will finish with a July 8-10 stop in Los Angeles.
Steve Parsons - WPA Pool/Getty Images
Catherine, the Duchess of Cambridge, walks to board a plane of the Royal Canadian Air Force at Heathrow airport on June 30, 2011, in London, ahead of her 11-day tour of North America with husband, Prince William.
Steve Parsons - WPA Pool/Getty Images
Catherine, the Duchess of Cambridge, walks to board a plane of the Royal Canadian Air Force at Heathrow airport on June 30, 2011, in London, ahead of her 11-day tour of North America with husband, Prince William.
Steve Parsons - WPA Pool/Getty Images
Prince William, talks to James Wright, left, the Canadian High Commissioner to the United Kingdom, as he and wife Catherine, the Duchess of Cambridge, walk to board a plane of the Royal Canadian Air Force at Heathrow airport on June 30, 2011, in London.
Steve Parsons - WPA Pool/Getty Images
Prince William, talks to James Wright, left, the Canadian High Commissioner to the United Kingdom, as he and wife Catherine, the Duchess of Cambridge, walk to board a plane of the Royal Canadian Air Force at Heathrow airport on June 30, 2011, in London.
Steve Parsons - WPA Pool/Getty Image
Prince William and wife Catherine, the Duchess of Cambridge, board a plane of the Royal Canadian Air Force at Heathrow airport on June 30, 2011, in London, en route to Ottawa, the first stop in their first official overseas trip as a married couple.
Steve Parsons - WPA Pool/Getty Image
Prince William and wife Catherine, the Duchess of Cambridge, board a plane of the Royal Canadian Air Force at Heathrow airport on June 30, 2011, in London, en route to Ottawa, the first stop in their first official overseas trip as a married couple.
Steve Parsons - WPA Pool/Getty Image
A general view of the Royal Canadian Air Force plane carrying Prince William and wife Catherine, the Duchess of Cambridge, as it is departing at Heathrow airport on June 30, 2011, in London.
