WATCH: Billie Eilish Performs ‘Happier Than Ever’ on Fallon Vivi Castaneda August 10, 2021 12:02 pm Billie Eilish performed the title track from her new sophomore album Happier Than Ever on The Tonight Show Starring Jimmy Fallon. View this post on Instagram A post shared by BILLIE EILISH (@billieeilish) Prior to taking the