Folie à Deux, Lady Gaga‘s Harley Quinn tells Joaquin Phoenix's Arthur Fleck, "You can do anything you want" - which probably isn't the best thing to say to someone with an unpredictable neurological disorder who's currently institutionalized for committing several murders.

Lady Gaga recently shared the movie's final trailer, and she sounds absolutely incredible singing "That's Life" in it. What we know about Joker: Folie à Deux is limited, but that'll change when it hits theaters in October.

This is going to be good for us,” Gaga says after she’s asked to leave. “Now I can be at your trial every day. I can see you every day until you get out.” Lady Gaga Reacts to Ex-Classmate Facebook Group Saying She'd 'Never Be Famous' From Lady Gaga to Mitski,

Folie à Deux has been released which highlights the DC sequel's twisted leads. Lady Gaga has also talked more about how she approached bringing Harley Quinn to life on

That certainly looks to be the idea in the latest trailer for Todd Phillips all-singing, all-dancing movie with music Joker: Folie À Deux, which sees Joaquin Phoenix's Arthur Fleck taking to the stand as he goes on trial for the televised killing of Murray Franklin (Robert De Niro) in Joker.

Lady Gaga is already making naysayers eat their words with just the teaser of Harley Quinn in Joker: Folie à Deux.