This is the couple's third time attending the gala together in looks by Cowan. NEW YORK, NEW YORK - MAY 04: (L-R) Christian Cowan and Sam Smith attend the 2026 Met Gala celebrating "Costume Art" at the Metropolitan Museum of Art on May 04, 2026 in New York City. (Photo by Jamie McCarthy/Getty Images) Getty Images Trending on Billboard What’s better than walking the Met Gala red carpet with your partner? Wearing something they designed for the occasion. Sam Smith and their partner, designer Christian Cowan, attended the 2026 Met Gala together — both in custom looks by none other than Cowan himself. Smith and Cowan’s matching black couture was inspired by the 1920s pioneer illustrator and designer Erté, who worked at the intersection of art and fashion and whose work has graced the cover of Vogue .…