Irish designers Róisín Pierce and Simone Rocha were worn by stars Alexa Chung and Billie Eilish on the night. Fashion’s biggest event took place last night at the annual Met Gala which was held at New York’s Metropolitan Museum of Art. Oscar-nominee Barry Keoghan’s debuted at fashion’s biggest night, as he walked the carpet in a royal blue and black tartan tweed suit by Burberry.