Prince William and his wife Catherine, Duchess of Cambridge, are introduced to naval officers as they arrive on board HMCS Montreal in Montreal, July 2, 2011.PHIL NOBLE
The Duchess of Cambridge looks on as Quebec Premier Jean Charest eats a hors d'oeuvres that she prepared during a visit to the Quebec Tourism and Hotel Institute in Montreal on Saturday, July 2, 2011.THE CANADIAN PRESS / Ryan Remiorz
Catherine, Duchess of Cambridge, reacts during a cooking workshop at the Institut de tourisme et d'hotellerie du Quebec in Montreal July 2, 2011.REUTERS / Mathieu Belanger
Prince William takes part in a cooking workshop at the Institut de tourisme et d'hotellerie du Quebec in Montreal July 2, 2011.REUTERS / Mathieu Belanger
The Duke and Duchess of Cambridge help prepare hors d'oeuvres during a visit to the Quebec Tourism and Hotel Institute in Montreal on Saturday, July 2, 2011.THE CANADIAN PRESS / Ryan Remiorz
The Duchess of Cambridge carries a tray of hors d'oeuvres during a visit to the Quebec Tourism and Hotel Institute in Montreal on Saturday, July 2, 2011.THE CANADIAN PRESS / Ryan Remiorz
A girl with a bouquet of flowers is escorted past police officers before the arrival of Britain's Prince William and his wife Catherine, Duchess of Cambridge, at the Institut de tourisme et d'hotellerie du Quebec in Montreal July 2, 2011.REUTERS / Phil Noble
Prince William talks with a patient during a tour of the Sainte-Justine Hospital in Montreal July 2, 2011.REUTERS / Christinne Muschi
The Duchess of Cambridge chats with a young cancer patient who is working on her crafts during a tour of Sainte-Justine children's hospital Saturday, July 2, 2011 in Montreal, Quebec.THE CANADIAN PRESS / Paul Chiasson
The Duke and Duchess of Cambridge (left) meet with children at Montreal's Ste-Justine Children's Hospital on Saturday July 2, 2011, as Quebec Premier Jean Charest and wife Michelle Dionne look on.THE CANADIAN PRESS / Paul Chiasson
The Duke and Duchess of Cambridge are greeted by Quebec Premier Jean Charest and his wife Michelle Dionne at Ste-Justine Hospital in Montreal Saturday, July 2, 2011.THE CANADIAN PRESS / Paul Chiasson
Prince William and his wife Catherine, Duchess of Cambridge, arrive at Montreal's Pierre Elliott Trudeau International Airport on the third day of their nine-day tour of Canada on July 2, 2011.TIMOTHY A. CLARY / AFP / Getty Images
Prince William and Kate, the Duke and Duchess of Cambridge, wave as they board their plane as they leave Ottawa, Ontario , en route to Montreal as they continue their Royal Tour of Canada Saturday, July 2, 2011.AP Photo / Charlie Riedel
Prince William, Duke of Cambridge meets former nurses, who served during World War II, at the Canadian War Museum on July 2, 2011 in Ottawa, Canada.John Stillwell - Pool / Getty Images
The Duchess of Cambridge chats with a veteran during a reception at the National War Museum in Ottawa on Saturday, July 2, 2011.THE CANADIAN PRESS / Fred Chartrand
The Duke and Duchess of Cambridge greets veterans at the War Museum in Ottawa on Saturday July 2, 2011.THE CANADIAN PRESS / Frank Gunn
Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge meet Canadian Royal Navy veteran Lieutenant Kenneth Mathewson-Porter while visiting the Canadian War Muesum on July 2, 2011 in Ottawa, Canada.John Stillwell - Pool / Getty Images
Prince William and his wife Catherine, Duchess of Cambridge, attend a reception at the Canadian War Museum in Ottawa July 2, 2011.REUTERS / Blair Gable
Prince William and his wife Catherine, Duchess of Cambridge, arrive to a reception at the Canadian War Museum in Ottawa July 2, 2011.REUTERS / Blair Gable
Catherine, Duchess of Cambridge, arrives for a tour the War Museum in Ottawa on July 2, 2011, the third day of a nine-day tour of Canada.GEOFF ROBINS / AFP / Getty Images
The Duchess of Cambridge greets admirers at the War Museum in Ottawa on Saturday July 2, 2011.THE CANADIAN PRESS / Frank Gunn
Catherine, Duchess of Cambridge, arrives at reception at the Canadian War Museum in Ottawa July 2, 2011.REUTERS / Blair Gable
Ottawa police officer Darren Joseph entertains the crowd waiting for the arrival of the Duke and Duchess of Cambridge at the War Museum in Ottawa, Saturday, July 2, 2011.THE CANADIAN PRESS / Frank Gunn
The Duke of Cambridge meets with cancer sufferer Terry Joyce at Rideau Hall in Ottawa on Saturday, July 2, 2011. Six weeks ago, the computer technician was given 12 weeks to live. His last wish was to meet the royal couple.THE CANADIAN PRESS / Nathan Denette
The Duke and Duchess of Cambridge take part in a ceremonial tree planting as Governor General David Johnston, right, and his wife Sharon watch at Rideau Hall in Ottawa on Saturday, July 2, 2011.THE CANADIAN PRESS / Nathan Denette
The Duke and Duchess of Cambridge take aprt in a ceremonial tree plating with Governor General David Johnston and his wife Sharon at Rideau Hall in Ottawa on Saturday, July 2, 2011.THE CANADIAN PRESS / Nathan Denette
Prince William watches as his wife Catherine, Duchess of Cambridge, shovels dirt during a tree planting ceremony at Rideau Hall in Ottawa July 2, 2011. Also pictured are Canada's Governor General David Johnston (R) and his wife Sharon (2nd R).REUTERS / Chris Wattie
Prince William and his wife Catherine, Duchess of Cambridge, look at a tree planted by Prince Charles and the late Princess Diana with Canada's Governor General David Johnston (2nd R) and his wife Sharon (R) at Rideau Hall in Ottawa July 2, 2011.REUTERS / Chris Wattie
The Duke and Duchess of Cambridge walk behind a bagpiper as they arrive for a ceremonial tree planting accompanied Governor General David Johnston at Rideau Hall in Ottawa on Saturday, July 2, 2011.THE CANADIAN PRESS / Nathan Denette