Now, ahead of Halloween 2024, we dive into the many costume ideas and fashion opportunities in Joker 2, also including some classic Joker costumes. In Joker: Folie à Deux, Lady Gaga wears this beautiful harlequin-inspired outfit, with a red blazer, black leather mini-skirt and a diamond-patterned shirt.

Joker: Folie à Deux pairs Joaquin Phoenix's Arthur Fleck with Lady Gaga's Harley Quinn, providing an intriguing backstory and questionable motives for the latter by the film's conclusion. Gaga is undoubtedly the biggest addition to Joker: Folie à Deux's cast,

Folie à Deux. Joker: Folie à Deux might be a courtroom drama, but it's also a surreal, dreamy, and twisted love story between Joaquin Phoenix's Arthur Fleck, AKA the Joker himself, and Lady Gaga's Harley "Lee" Quinn.

Another thing about Joker 2 that both journalists and moviegoers have pointed out: the idea that the film – particularly its shocking ending and implications of who the real Joker is – is a direct rebuke of the fans who embraced the first film and made it a $1 billion hit.

Folie à Deux." There are a lot of controversial elements to the long-awaited sequel to "Joker," but maybe the biggest one is the reveal that Joaquin Phoenix's Arthur Fleck isn't really the Joker we all know and love.