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The Duke and Duchess of Cambridge, Prince William and Kate Middleton visit the 1st Battalion Irish Guards at the St Patrick's Day Parade at Mons Barracks, Aldershot, Hampshire, UK, March 17, 2013. The Duke of Cambridge attended the Parade as Colonel of the Regiment. Her Royal Highness presented the traditional sprigs of shamrocks to the Officers and Guardsmen of the Regiment. (Michael Webberley/iPhoto)