Britain's Prince William and his bride Catherine, Duchess of Cambridge, are seen posing for an official photograph, with their bridesmaids and pageboys, on the day of their wedding, in the throne room at Buckingham Palace, in central London in an April 29, 2011 file photograph. Britain's Prince William and his wife Catherine are expecting a baby, the prince's office said on December 3, 2012.[Photo/Agencies]
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