Watch Lady Gaga deliver Harley Quinn-inspired rendition of ‘Happy Mistake’ on ‘Kimmel’
Lady Gaga performed a rendition of ‘Happy Mistake’ inspired by her character of Harley Quinn from Joker: Folie à Deux while on Jimmy Kimmel. READ MORE: ‘Joker: Folie à Deux’ review: Lady Gaga shines in a provocative prison musical The pop icon appeared on Jimmy Kimmel Live! Tuesday night (October 1) where she promoted her new film…