William, Kate In Canada

Prince William, second right, the Duke of Cambridge laughs with his wife Kate, the Duchess of Cambridge during a ceremony at Rideau Hall in Ottawa on Thursday, June 30, 2011. (AP Photo/The Canadian Press, Nathan Denette)

Kate the Duchess of Cambridge, center, receives flowers from Aurelie Thibault, left, and Sophie Graydon, right, as she takes part in a ceremony at Rideau Hall in Ottawa, Ontario on Thursday, June 30, 2011. (AP Photo/The Canadian Press, Nathan Denette)

Canadian Prime Minister Stephen Harper, second from left, along with his wife Laureen, left, The Duchess of Cambridge, third from left, Sharon Johnston, second from right, and Prince William, the Duke of Cambridge, wave before entering Rideau Hall in Ottawa, Ontario, Thursday June 30, 2011. (AP Photo/The Canadian Press, Adrian Wyld)

Prince William and Kate, the Duke and Duchess of Cambridge laugh as they arrive at Rideau Hall in Ottawa, Canada on Thursday June 30, 2011. (AP Photo/The Canadian Press, Adrian Wyld)

Prince William speaks with the crowd as he arrives at Rideau Hall in Ottawa, Canada Thursday June 30, 2011. (AP Photo/The Canadian Press, Adrian Wyld)

The Duchess of Cambridge, Kate, and Canada Prime Minister Stephen Harper look on as Prince William, the Duke of Cambridge, signs the veteran memorial book on Thursday, June 30, 2011 in Ottawa, Canada. (AP Photo/The Canadian Press, Paul Chiasson)

The Duke and the Duchess of Cambridge wave to the crowds as they take part in a ceremony at the National War Memorial in Ottawa, Ontario, on Thursday, June 30, 2011. Prince William and Kate arrived in Canada on Thursday for their first official overseas trip that is expected to draw excited crowds. (AP Photo/The Canadian Press, Sean Kilpatrick)

The Duke and the Duchess of Cambridge walk with Canadian Prime Minister Stephen Harper, left, and wife Laureen, right, as they take part in a ceremony at the National War Memorial in Ottawa, Ontario, on Thursday, June 30, 2011. (AP Photo/The Canadian Press, Sean Kilpatrick)

Duchess of Cambridge shakes hands greeting the crowd as she and Prince William take part in a ceremony at the National War Memorial in Ottawa on Thursday, June 30, 2011. Prince William and Kate arrived in Canada on Thursday for their first official overseas trip that is expected to draw excited crowds. (AP Photo/The Canadian Press, Paul Chiasson)

Prince William greets the crowd following a ceremony at the Canadian War Memorial Thursday, June 30, 2011 in Ottawa. Prince William and Kate arrived in Canada on Thursday for their first official overseas trip that is expected to draw excited crowds. (AP Photo/The Canadian Press, Paul Chiasson)

Prince William and Kate, the Duke and Duchess of Cambridge and Canada Prime Minister Stephen Harper and his wife Laureen pause at the 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 Kate, the Duke and Duchess of Cambridge, are greeted by Canadian Foreign Affairs Minister John Baird upon their arrival in Ottawa, Canada, on their first official overseas trip Thursday, June 30, 2011. (AP Photo/The Canadian Press, Frank Gunn)

Prince William and Kate, the Duke and Duchess of Cambridge walk down the stairs of their aircraft upon their arrival in Ottawa, Canada, on their first official overseas trip Thursday, June 30, 2011. (AP Photo/The Canadian Press, Frank Gunn)

Royal watchers wear photo masks of the the Duke and Duchess of Cambridge as they await their arrival at the War Memorial in Ottawa, June 30, 2011. Prince William and Kate left Heathrow airport aboard a Canadian Forces aircraft bound for Ottawa to kick off their nine day Canadian tour, bringing with them the relentless attention of the international media. (AP Photo/The Canadian Press, Sean Kilpatrick)

Francine Dorion holds up a handmade tapestry as she waits for the arrivel of the Duke and Duchess of Cambridge at the War Memorial, Thursday, June 30, 2011 in Ottawa, Canada. (AP Photo/The Canadian Press, Paul Chiasson)