Celebrity 'I Gave Madonna a Spanking': Jessica Chastain Joins the Queen of Pop Onstage in Prague Chastain is the latest celebrity to join Madonna on stage By Maria Mercedes Lara Maria Mercedes Lara Instagram Twitter Maria Mercedes Lara is the Digital Content Operations Director for PEOPLE, where she oversees content management and editorial workflow for the digital team as well as focus on increasing growth through PEOPLE's newsletters, homepage and notification audiences. She previously held the position of Deputy News Director for PEOPLE.com. Before joining PEOPLE, Maria worked at POPSUGAR, SpinMedia Group and Jezebel. She graduated with a B.A. in Literature from Eugene Lang College of Liberal Arts at the New School in New York City. Maria currently lives in Brooklyn, New York, with her husband and two children. People Editorial Guidelines Published on November 8, 2015 06:30 PM Share Tweet Pin Email Photo: Courtesy Jessica Chastain Forget about Taylor Swift‘s squad, Madonna‘s Rebel Heart tour is quickly racking up an impressive list of celebrity cameos. The latest star to make an appearance? Oscar-nominated actress Jessica Chastain, who joined the Queen of Pop onstage to give her a spanking. Chastain, 38, joined Madonna, 57, during a performance of “Unapologetic Bitch” in Prague on Saturday night. The pair strutted down the stage hand-in-hand before Madge led Chastain to the main stage and the actress unleashed her impressive dance moves. Then Chastain delivered a few taps on Madonna’s bottom while she crawled on the floor underneath her. “You were a very good bitch,” Madonna told Chastain onstage after the song was over. “I gave Madonna a spanking & Ive a video to prove it,” the actress wrote on her Facebook page. She also shared an onstage shot from the night, writing, “The moment right before @madonna handed me a banana. The fkn QUEEN.” Previous guests on Madonna’s stage include Amy Schumer and Katy Perry, although they both got spanked rather than being given the chance to spank Madge themselves.