The Duke and Duchess of Cambridge leave Goldsmith's Hall in the City of London, following a reception to celebrate the centenary of the expedition to the South Pole by Scott-Amundsen, Thursday, April 26, 2012. (AP Photo/Alastair Grant)

Photo by: Alastair Grant

The Duke and Duchess of Cambridge leave Goldsmith's Hall in the City of London, following a reception to celebrate the centenary of the expedition to the South Pole by Scott-Amundsen, Thursday, April 26, 2012. (AP Photo/Alastair Grant)