Prince William waves to the crowd as he leaves a citizenship ceremony Friday, July 1, 2011, in Gatineau, Canada.
William and Kate, the Duke and Duchess of Cambridge, are saluted by an RCMP officer as they leave a citizenship ceremony on Friday, July 1, 2011, in Gatineau, Canada.
Prince William speaks to the crowd following a citizenship ceremony Friday, July 1, 2011, in Gatineau, Canada.
Kate, Duchess of Cambridge, is guarded by security as she greets royal fans after visiting the Museum of Civilization in Gatineau, Canada on Friday, July 1, 2011.
William and Kate, the Duke and Duchess of Cambridge leave a citizenship ceremony on Friday, July 1, 2011, in Gatineau, Canada.
William and Kate, the Duke and Duchess of Cambridge, flanked by Governor General David Johnston, left, and Immigration Minister Jason Kenney smile during a group photo with newly sworn-in Canadians at a citizenship ceremony Friday, July 1, 2011 in Gatineau, Canada.
William and Kate, the Duke and Duchess of Cambridge, share a laugh after signing a guest book at a citizenship ceremony Friday, July 1, 2011, in Gatineau, Canada.
Kate, Duchess of Cambridge, greets a young newly sworn in Canadian citizen during a citizenship ceremony on Friday, July 1, 2011, in Gatineau, Canada.
William and Kate, the Duke and Duchess of Cambridge greet a new Canadian citizen during a citizenship ceremony Friday, July 1, 2011, in Gatineau, Canada.