Lady Gaga stars in 'Joker: Folie à Deux' as Harley Quinn, set for October 4th release.

Lady Gaga appears in the upcoming film 'Joker: Folie à Deux,' set to release October 4th, featuring her as Harley Quinn. Dua Lipa shares a preview of her new album 'Radical Optimism,' revealing its first two singles as "Houdini" and "Training Season." Jennifer Lopez rebrands her tour after canceling several shows, which she now titles "This Is Me… Live | The Greatest Hits."