Though “Joker: Folie à Deux” had a budget rumored to be near $200 million and a 36-person costume crew, “A Complete Unknown” was the bigger costume task.

Set photos from "Joker: Folie à Deux" unveil Lady Gaga's make-up and costume for the role of Harley Quinn.

Joker: Folie à Deux costume designer Arianne Phillips says she wasn't initially on board with Lady Gaga's intense desire to pay homage to the original animated version of Harley Quinn with her ...

Gaga, 36, worked with Phillips on her starring role in "A Star Is Born," which Phillips produced. Filming for the Warner Bros. "Joker" sequel has taken place in both New York and Los Angeles ahead ...