Lady GaGa made a stop at the Jimmy Kimmel show on Thursday to perform her new single, “Happy Mistake” from her new album Harlequin, which features the Oscar, Emmy, and Grammy winner’s songs from the film Joker: Folie à Deux. Her performance was an absolute knockout. Check it out by clicking the link below. Harlequin is available now on all streaming platforms. Joker: Folie à Deux, from Warner Brothers Pictures, is in theaters now. https://www.youtube.com/watch?v=gdzWWkDXkis&t=251s