See photos from the 2021 Met Gala as Timothée Chalamet, Billie Eilish and more channel this year's theme: In America: A Lexicon of Fashion.

The actress is a Met Gala veteran, having made her debut in 2011 wearing a lace-embroidered asymmetrical dress by Stella McCartney. Her 2021 appearance marked her 10th time at the star-studded event.