Chris Jackson
Prince William and Kate, the Duke and Duchess of Cambridge, wave from the steps of the royal plane as they leave from Calgary Airport to head to Los Angeles on July 8, 2011, in Calgary, Alberta, Canada.
Chris Jackson/Getty Images
Prince William and Kate, the Duke and Duchess of Cambridge, climb the steps of the royal plane as they leave from Calgary Airport to head to Los Angeles on July 8, 2011, in Calgary, Alberta, Canada.
Chris Jackson/Getty Images
Prince William and Kate, the Duke and Duchess of Cambridge, climb the steps of the royal plane as they leave from Calgary Airport to head to Los Angeles on July 8, 2011, in Calgary, Alberta, Canada.
Chris Jackson/Getty Images
Prince William, and Kate, the Duke and Duchess of Cambridge, prepare to leave from Calgary Airport to head to Los Angeles on July 8, 2011, in Calgary, Alberta, Canada.
Chris Jackson/Getty Images
Prince William and Kate, the Duke and Duchess of Cambridge, meet Frances Miller as they prepare to leave from Calgary Airport to head to Los Angeles on July 8, 2011, in Calgary, Alberta, Canada.
AP Photo/The Canadian Press/Nathan Denette
Kate, Duchess of Cambridge, receives flowers from Samuel Seehawer, right, as the royal couple attend their official departure from Canada in Calgary, Alberta, on Friday July 8, 2011.
TIMOTHY A. CLARY/AFP/Getty Images
Britain's Prince William and Catherine, Duchess of Cambridge, attend their official departure ceremony at the Challenger Rotary Park in Calgary, Alberta, at the end of their nine-day tour of Canada on July 8, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and Kate, the Duke and Duchess of Cambridge, stand at their official departure ceremony in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William, Duke of Cambridge takes part in an official departure ceremony in Calgary, Alberta, Canada, on Friday July 8, 2011.
AP Photo/The Canadian Press/Nathan Denette
Kate, Duchess of Cambridge takes part in an official departure ceremony in Calgary, Alberta, Canada, on Friday July 8, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William, Duke of Cambridge takes part in an official departure ceremony in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William, Duke of Cambridge takes part in an official departure ceremony in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and Kate, the Duke and Duchess of Cambridge view the Portraits of Honour display at their official departure ceremony in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Nathan Denette
Kate, Duchess of Cambridge is greeted by Canada Prime Minister Stephen Harper, his wife, Laureen, left, and Lt.-Gov. David Johnston and his wife Sharon, behind right, at the royal couple's official departure ceremony in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Jeff McIntosh
Kate, Duchess of Cambridge leave an event at the Calgary Zoo on the last day of her and Prince William's cross-Canada tour in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Jeff McIntosh
Prince William and Kate, the Duke and Duchess of Cambridge, sign a guest book at the ENMAX Conservatory with Alberta Premier Ed Stelmach, left, and Lt. Gov Donald S. Ethell at the Calgary Zoo in Calgary, Alberta, Canada, on Friday, July 8, 2011.
Jeff McIntosh
Prince William and Kate, the Duke and Duchess of Cambridge, applaude during a tour of the ENMAX Conservatory at the Calgary Zoo in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Jeff McIntosh
Prince William and Kate, the Duke and Duchess of Cambridge, tour the ENMAX Conservatory at the Calgary Stampede parade in Calgary, Alberta, Canada, on Friday, July 8, 2011.
Chris Jackson/Pool/Getty Images
Prince William and Kate, the Duke and Duchess of Cambridge, attend a reception at Calgary Zoo on July 8, 2011 in Calgary, Alberta, Canada.
AP Photo/The Canadian Press/Jeff McIntosh
Prince William and Kate, the Duke and Duchess of Cambridge tour the ENMAX Conservatory at the Calgary Zoo in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Jeff McIntosh
Prince William and Kate, the Duke and Duchess of Cambridge, tour the ENMAX Conservatory at the Calgary Zoo in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Jeff McIntosh
Prince William and Kate, the Duke and Duchess of Cambridge, speaks with Alberta Premier Ed Stelmach at the ENMAX Conservatory at the Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Jeff McIntosh
Prince William and Kate, the Duke and Duchess of Cambridge, greet well-wishers at the Calgary zoo on the last day of their cross-Canada tour in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Jeff McIntosh
Prince William and Kate, the Duke and Duchess of Cambridge, arrive at the ENMAX Conservatory at the Calgary Zoo in Calgary, Alberta, Canada, on Friday, July 8, 2011.
Phil Noble/Pool/Getty Images
Prince William and Kate, the Duke and Duchess of Cambridge, leave after the lauch of the Calgary Stampede parade on July 8, 2011, in Calgary, Alberta, Canada.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and Kate, the Duke and Duchess of Cambridge, take part in the Calgary Stampede parade in Calgary, Alberta, Canada, on Friday July 8, 2011.
Phil Noble/Pool/Getty Images
Prince William and Kate, the Duke and Duchess of Cambridge attend the Calgary Stampede parade on July 8, 2011, in Calgary, Alberta, Canada.
AP Photo/The Canadian Press/Nathan Denette
Prince William and Kate, the Duke and Duchess of Cambridge, watch the annual Calgary Stampede parade in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and Kate, the Duke and Duchess of Cambridge, watch the annual Calgary Stampede parade in Calgary, Alberta, Canada, on Friday, July 8, 2011.
AP Photo/The Canadian Press/Nathan Denette
Kate, Duchess of Cambridge is framed through a carriage window during the annual Calgary Stampede parade in Calgary, Alberta, Canada, on July 8, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and Kate, the Duke and Duchess of Cambridge, watch the start of the Calgary Stampede parade in Calgary, Alberta, Canada, on July 8, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and Kate, the Duke and Duchess of Cambridge, watch the start of the Calgary Stampede parade in Calgary, Alberta, Canada, on July 8, 2011.
TIMOTHY A. CLARY/AFP/Getty Images
Kate, Duchess of Cambridge, smiles at the start of the 2011 Calgary Stampede Parade in Calgary, Alberta, Canada, on July 8, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and Kate, the Duke and Duchess of Cambridge, watch the beginning of the Calgary Stampede parade in Calgary, Alberta, Canada, on uly 8, 2011.
TIMOTHY A. CLARY/AFP/Getty Images
Prince William and Kate, Duchess of Cambridge wave at the start of the 2011 Calgary Stampede Parade in Calgary, Alberta, Canada, on July 8, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William and Kate, the Duke and Duchess of Cambridge, watch the beginning of the Calgary Stampede parade in Calgary, Alberta, Canada, on July 8, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and Kate, the Duke and Duchess of Cambridge, push a button to start the Calgary Stampede parade in Calgary, Alberta, Canada, on July 8, 2011.
TIMOTHY A. CLARY/AFP/Getty Images
Prince William and Kate, Duchess of Cambridge, push a button to start the Calgary Stampede parade in Calgary, Alberta, Canada, on July 8, 2011.
AP Photo/The Canadian Press/Jonathan Hayward
Prince William and Kate, the Duke and Duchess of Cambridge, take part in the start the Calgary Stampede parade in Calgary, Alberta, Canada, on July 8, 2011.
AP Photo/The Canadian Press/Nathan Denette
Prince William, Duke of Cambridge, arrives at the Calgary Stampede parade in Calgary, Alberta, Canada, July 8, 2011.
AP Photo/The Canadian Press/Jeff McIntosh
Kate, Duchess of Cambridge, waves from her car during the Calgary Stampede parade in Calgary, Alberta, Canada, on July 8, 2011.