Lady Gaga and Joaquin Phoenix appear in "Joker: Folie à Deux"
Lady Gaga looks to be off the deep end with her new character.
Phoenix won a best actor Academy Award for the original 2019 DC film
The singer/actress is believed to be playing Harley Quinn in the “Joker” sequel, “Joker: Folie à deux.”
The caption on the photo read simply, “Folie à Deux” with a joker emoji.