Catherine, Duchess of Cambridge looks on while visiting the Irish Guards during a St Patrick's Day parade in Mons Barracks in Aldershot on March 17, 2014. Prince William, the Duke of Cambridge attended the parade as Colonel of the Regiment and Catherine presented the traditional sprigs of shamrocks to the Officers and Guardsmen of the Regiment. The Duke and Duchess of Cambridge visit the 1st Battalion Irish Guards at the St. Patricks Day Parade at Mons Barracks Aldershot.  AFP PHOTO/POOL/BRADLEY PAGE        (Photo credit should read BRADLEY PAGE/AFP/Getty Images)