Lady Gaga is ringing in her 38th birthday in style ... with roles like Patrizia Reggiani in House of Gucci in 2021 and Harley Quinn in Joker: Folie à Deux, due out this fall.

Lady Gaga already teased a preview of her Joker face — now, one week out from the highly-anticipated sequel's April 9 trailer debut, she's officially debuted her Harley Quinn voice in the first ...

Those theories were soon confirmed, as Lady Gaga was reported to be playing Harley Quinn, the Joker's love interest. In the comics, Harleen Quinzel is a psychiatrist the Joker falls in love with ...