Lady Gaga confirms casting in 'Joker' sequel

Lady Gaga will be the newest in a long line of actresses who have played or voiced the iconic character of Harley Quinn. Photo: AFP

Pop star and actress Lady Gaga confirmed her casting in the upcoming motion picture sequel to the Oscar-winning psychological thriller Joker, by posting a musical teaser on Twitter.

The musical clip depicts silhouettes of Phoenix and Gaga's characters dancing together to the tune of the song Cheek To Cheek, originally written by Irving Berlin in 1935 for the Fred Astaire and Ginger Rogers movie Top Hat.