Lady Gaga as Harleen Frances Quinzel in ‘JOKER FOLIE À DEUX’. Filming has officially wrapped on ‘Joker: Folie à Deux’ starring Joaquin Phoenix, Lady Gaga, Harry Lawtey, Zazie Beetz, Brendan Gleeson and Catherine Keener. The film will be released in theaters on October 4, 2024. Filming began on December 11, 2022. #LadyGaga #Joker2 #JoaquinPhoenix #LittleMonsters