American singer-songwriter and actor Lady Gaga has confirmed her casting in `Joker 2` by posting a musical teaser on her social media. According to Variety, the upcoming sequel, which has been officially titled `Joker: Folie a Deux`, will star Gaga opposite Joaquin Phoenix, returning to the role of Joker after winning the Oscar for best actor for his performance in the 2019 first instalment.

The teaser posted by her was set to `Cheek to Cheek`, which Gaga has famously covered in her music career alongside Tony Bennett. Details on Gaga`s character are still under wraps. In June, it was reported by Variety, that Gaga was circling the role of Harley Quinn in the upcoming `Joker` sequel, which is set to be a musical. On June 7, director Todd Phillips posted the screenplay`s cover on Instagram and revealed that the `Folie a Deux` subtitle.