Catherine Walker Dark Green Coat During the annual Irish Guards St. Patrick's Day Parade at Cavalry Barracks in March 2018, Catherine got festive in a vibrant green coat by Catherine Walker with a faux fur collar and cuffs from Troy London. She accessorised with a pair of Kiki McDonough earrings, a Gina Foster hat, Cornelia James gloves, and Tod's heels. Image Source: Getty / Chris Jackson