ALDERSHOT, ENGLAND - MARCH 17: Catherine, Duchess of Cambridge attends the St Patrick's Day Parade at Mons Barracks on March 17, 2015 in Aldershot, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
ALDERSHOT, ENGLAND - MARCH 17: Catherine, Duchess of Cambridge attends the St Patrick's Day Parade at Mons Barracks on March 17, 2015 in Aldershot, England. (Photo by Mark Cuthbert/UK Press via Getty Images)