Last Night's Look: Love It or Leave It?Check out the head-turning outfits Kate Middleton, Katy Perry and more stars were just spotted in! Then decide – fabulous or fashion faux pas?

KATE MIDDLETON

It was a white night for the Duchess of Cambridge, who pairs a full-coverage cream Roland Mouret gown (only slightly less memorable than another white dress she wore) with daring metallic sandals for a dinner at Claridge's Ballroom in London.