The Duke and Duchess of Cambridge appear with officers and guardsmen of 1st Battalion the Irish Guards during the regiment's St Patrick's Day parade at Cavalry Barracks in Hounslow.
Kate sports a forest green custom Alexander McQueen dress coat and matching fascinator, paired with black Gianvito Rossi "Piper" suede pumps, a green tourmaline and green amethyst oval drop Kiki McDonough earrings and a gold Cartier three-leaf shamrock emerald brooch, a hand-me-down from Queen Elizabeth II's late mom, the Queen Mother.
The two meet members of the 1st Battalion Irish Guards at Cavalry Barracks in Hounslow, England. Some 350 soldiers marched on the Parade Square.
The two enjoy pints of Guinness.
Kate is a Guinness fan!
Kate pets Irish wolfhound and mascot Domnhall, who led the procession.
A young girl presents Kate with a posy.