Lady Gaga is officially playing Harley Quinn in 'Joker 2,' and suddenly we're a lot more interested in 'Joker 2'

Lady Gaga has revealed that she will be playing Harley Quinn opposite Joaquin Phoenix in the sequel to Joker, titled Joker: Folie à Deux.

The scene-stealing pop icon shared a quick teaser announcing the film on social media. It doesn't give us much to go on: a quick animated snapshot of a dancing Joker and Harley, all set to...