Madonna Gets A Spanking From Jessica Chastain On Stage In Prague

Girls gone wild.

Jessica Chastain joined Madonna onstage during Madonna's concert in Prague Saturday night and things got pretty steamy. 

The Oscar-nominated actress strutted her stuff with Madge during the song "Unapologetic Bitch." She made sure to break out her sexiest dance moves for the occasion, before giving Madge a (not so) serious spanking.

"The Martian" star is the latest in a string of celebs to join Madonna onstage during her Rebel Heart Tour; others who've had the honor include Katy Perry and Amy Schumer. 

"I gave Madonna a spanking & Ive a video to prove it. #rebelheart #unapologeticbitch," Chastain wrote on Facebook afterwards along with a link to a YouTube video (which you can watch below). 

Madonna also shared an Instagram photo from the concert with the caption, "Tonights Sexy and Beautiful Unapologetic Bitch🎉💋💘. Thank you Jessica Chastain. Thank you Prague!" 

Also on HuffPost:

Madonna: 56 Of Her Most Memorable Looks