Instagram/Rihanna & A$AP Rocky Celebrity Rihanna and A$AP Rocky steal the show at the 2026 Met Gala in custom Margiela and Chanel looks. See their stunning "Costume Art" arrival. May 6, 2026 AceShowbiz - Rihanna and A$AP Rocky made a striking appearance at the 2026 Met Gala, held on May 4 at the Metropolitan Museum of Art in New York City. The event's theme was "Costume Art," and the fashionable couple arrived fashionably late, capturing the attention of attendees and media alike. Rihanna dazzled in a custom sculpted bronze gown by Maison Margiela, designed by Glenn Martens.