Broadway star Patti LuPone has been tapped for a role on the WandaVision spin-off Agatha: Coven Of Chaos.Kathryn Hahn stars as the titular witch on the upcoming series, which is slated to arrive on Disney+ sometime next winter.Now insiders have informed Deadline that Patti, 73, a stage legend with three Tony Awards to her name, has hopped aboard the project. Looking ahead: Broadway star Patti LuPone has been tapped for a role on the upcoming WandaVision spin-off Agatha: Coven Of ChaosHer castmates include Aubrey Plaza, fresh off a buzzy turn on The White Lotus, and Saturday Night Live veteran Sasheer Zamata.Although she is principally known for her work in the theater, Patti is no stranger to TV, having been on two seasons of American Horror Story including Coven.