Jessica Chastain was invited up on stage to dance with Madonna during her concert in Prague on Saturday. The Material Girl’s Rebel Heart Tour has thus far grossed approximately $50 million.

Shortly after she was pulled from the audience, Jessica Chastain danced to the reggae-flavored song “Unapologetic Bitch” from Madonna’s “Rebel Heart” album. After getting down to the music for a minute or so, Chastain impulsively spanked Madonna, who was crawling on her hands and knees in front of her.

.@Jes_Chastain spanked @Madonna on stage during her #RebelHeartTour: https://t.co/a7C0fty0W0 pic.twitter.com/UPqGntKV9D

— Entertainment Weekly (@EW) November 8, 2015

Just like Taylor Swift, Madonna has been known lately for inviting A-listers up on to the stage during her concerts for an impromptu dance party. It’s likely this is planned well ahead of time.

Jessica Chastain was in Prague, where she’s filming The Zookeeper’s Wife. The film is based on the diaries of Antonina Zabinksi, in the book by Diane Ackerman.

This wasn’t Jessica Chastain’s first time meeting Madonna. Back in 2011, Madonna presented her with the Gucci Award for Women in Cinema in Venice at the Venice Film Festival.

I gave #madonna a spanking & Ive a video to prove it. https://t.co/ezHHo3sD3W

— Jessica Chastain (@jes_chastain) November 8, 2015

Jessica Chastain isn’t the first A-lister Madonna has brought up on stage recently either. Katy Perry, Anderson Cooper, and Amy Schumer have all graced her stage of late.

None other than Jessica Chastain, however, can lay claim to having spanked the Material Girl.