Gallery: 10 new pieces we’re loving at Marks & Spencer right now (Prima (UK)) "It's my power outfit," she explained. During the evening Katy, who was accompanied by her fiancé Orlando sporting a statement-making Vuitton harness with white shirt and black trousers, serenaded the iconic architect with her version of the Louis Armstrong classic What a Wonderful World, and revealed how happy she was to be attending a party.