Britain's Duchess of Cambridge celebrated St. Patrick's Day by presenting shamrocks to soldiers from the Irish Guards. Dressed in suitably green attire, Kate's presentation of the shamrocks is a century-old tradition first inaugurated in 1901.br br However, it wasn't just soldiers who had a chance to meet the royals: the regiment's mascot, an Irish Wolfhound also received a bunch of shamrocks, which the Duchess tucked into his collar.br br After the ceremony, the royal couple received a warm reception from soldiers in their dining room, before William enjoyed a few sips of Guinness, a traditional St Patrick's Day drink.