Billie Eilish's incredible transformation as she swaps T-shirt for ballgown at the Met Gala

Behind-the-scenes silliness! Billie Eilish, Lil Nas X, and more stars pose for snaps at the Met Gala

Billie Eilish Wears Oscar de la Renta at Met Gala After Brand Says it Will Stop Using Fur

Cara Delevingne, Billie Eilish and More Stars Who Made Political Statements at the 2021 Met Gala