Popsugar Celebrity Billie Eilish Britney Spears Dancing to Billie Eilish's "Bad Guy" Video Britney Spears Brings Back the Snake and "I'm a Slave 4 U" Choreography to Billie Eilish 5 June 2019 by Monica Sisavat Solís First Published: 4 June 2019 Billie EilishCelebrity InstagramsBritney Spears