Billie Eilish's sun-soaked bikini photos - see the best The Happier Than Ever performer is one for lush sunny moments Updated on 06 Mar 2023 Ahad Sanwari Online News Writer New York. Billie was dressed in a black satin negligee with a lace underlay that she'd paired with sheer Gucci tights and a pair of strappy heels while posing for selfies in her bedroom. MORE: Billie.