Gaga's costume by Oscar-nominated cuts between the heightened sensibility of the comic book source material and the gnarly aesthetic of the first "Joker" film.

Source: https://boingboing.net/2023/03/26/check-out-these-set-photos-of-lady-gaga-as-harley-quinn-in-joker-2.html

Gaga's involvement with the movie was first teased in June 2022.

Source: https://www.popsugar.com/entertainment/joker-2-48856734

The photos show Gaga's Harley surrounded by a crowd of protesters supporting her as she walks into a courthouse surrounded by police officers.

Source: https://collider.com/joker-2-set-images-lady-gaga-harley-quinn/

The sequel to the highest-grossing R-rated movie of all-time, Lady Gaga's Harley Quinn as a co-protagonist alongside Joaquin Phoenix's Arthur Fleck.

Source: https://screenrant.com/joker-2-set-photos-harley-quinn-lady-gaga-change/

Warner Bros. Pictures has thus far kept a lot of story details under wraps, especially with Gaga's Harley.

Source: https://screenrant.com/joker-2-harley-quinn-lady-gaga-image/