Lady Gaga's Harley Quinn steals the show in Joker 2 set photos.
Lady Gaga was spotted on the set of Joker: Folie à Deux sporting Harley Quinn's iconic eye makeup and diamond-patterned clothing. She was seen amongst Gotham PD officers and citizens protesting with Joker-inspired face paint and masks. One of the signs in the crowd indicates that Harvey Dent (Two-Face) will likely be involved in the sequel in some capacity. The film is reportedly a musical and will live outside of the new DCU.