Duke and Duchess of Cambridge

Britain's Prince William and wife Catherine Middleton celebrate their second wedding anniversary on April 29. The Duke and Duchess are also expecting their first child this year.

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LONDON, ENGLAND - APRIL 26: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge share a joke on the set used to depict Diagon Alley in the Harry Potter Films during the Inauguration Of Warner Bros. Studios Leavesden on April 26, 2013 in London, England. (Photo by Chris Jackson/Getty Images)
LONDON, ENGLAND - APRIL 26: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge share a joke on the set used to depict Diagon Alley in the Harry Potter Films during the Inauguration Of Warner Bros. Studios Leavesden on April 26, 2013 in London, England. (Photo by Chris Jackson/Getty Images)