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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Britain's Prince William, left, and his wife Kate, Duchess of Cambridge, talk to the Dean of Westminster Abbey, Dr John Hall, as they leave following a service to celebrate the 60th anniversary of the coronation of Britain's Queen Elizabeth II at Westminster Abbey, London, Tuesday, June 4, 2013. (AP Photo/Alastair Grant)
Britain's Prince William, left, and his wife Kate, Duchess of Cambridge, talk to the Dean of Westminster Abbey, Dr John Hall, as they leave following a service to celebrate the 60th anniversary of the coronation of Britain's Queen Elizabeth II at Westminster Abbey, London, Tuesday, June 4, 2013. (AP Photo/Alastair Grant)