A girl wearing a costume plays with flags bearing the images of Britain's William, Duke of Cambridge and Catherine, Duchess of Cambridge, at St James Park in central London April 29, 2011. Prince William married his fiancee, Kate Middleton, in Westminster Abbey on Friday. (ROYAL WEDDING/PUBLIC) REUTERS/Marcelo del Pozo (BRITAIN - Tags: ROYALS ENTERTAINMENT SOCIETY IMAGES OF THE DAY)