The Duke of Cambridge, Colonel of the Irish Guards, and the Duchess of Cambridge, visit the 1st Battalion Irish Guards during the St. Patrick's Day Parade, at the Cavalry Barracks, in Hounslow, where the Duchess will present the traditional sprigs of shamrock to the Officers and Guardsmen. (Photo by Yui Mok/PA Images via Getty Images)
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PA Images Yui Mok - PA Images