see more

LONDON, ENGLAND - JANUARY 11: Catherine, Duchess of Cambridge is seen after viewing artist Paul Emsley's new portrait of herself during a private viewing at the National Portrait Gallery on January 11, 2013 in London, England. (Photo by John Stillwell - WPA Pool/Getty Images)

LONDON, ENGLAND - JANUARY 11:  Catherine, Duchess of Cambridge is seen after viewing artist Paul Emsley's new portrait of herself during a private viewing at the National Portrait Gallery on January 11, 2013 in London, England. (Photo by John Stillwell - WPA Pool/Getty Images)

see more

LONDON, ENGLAND - JANUARY 11: Catherine, Duchess of Cambridge is seen after viewing artist Paul Emsley's new portrait of herself during a private viewing at the National Portrait Gallery on January 11, 2013 in London, England. (Photo by John Stillwell - WPA Pool/Getty Images)

LONDON, ENGLAND - JANUARY 11:  Catherine, Duchess of Cambridge is seen after viewing artist Paul Emsley's new portrait of herself during a private viewing at the National Portrait Gallery on January 11, 2013 in London, England. (Photo by John Stillwell - WPA Pool/Getty Images)

see more

LONDON, ENGLAND - JANUARY 11: Prince William, Duke of Cambridge meets artist Paul Emsley as Catherine, Duchess of Cambridge looks on after viewing his new portrait of the Duchess during a private viewing at the National Portrait Gallery on January 11, 2013 in London, England. (Photo by John Stillwell - WPA Pool/Getty Images)

LONDON, ENGLAND - JANUARY 11:  Prince William, Duke of Cambridge meets artist Paul Emsley as Catherine, Duchess of Cambridge looks on after viewing his new portrait of the Duchess during a private viewing at the National Portrait Gallery on January 11, 2013 in London, England. (Photo by John Stillwell - WPA Pool/Getty Images)