See the divas duet at the Rebel Heart Tour! Madonna brings Focus singer on stage in Miami. Singers hauling their famous friends onto center stage is the new trend. Madonna hopped on the bandwagon last night, spontaneously bringing Ariana Grande on to perform Unapologetic Bitch. First she spotted the young star in the crowd: Madonna holding Ariana's hand at the #RebelHeartTour in Miami, FL -JANUARY 24TH- pic.twitter.com/7N71g5dEza— ArianaGrande Updates (@AriAlwaysUpdate) January 25, 2016 Madonna then pulled Grande on stage, introducing her as "the one and only", spanked her (?!) and bowed before her: Ariana shared her starstruck excitement on social media after the show: I am dead. @madonna thank you for the spanking & the banana. #rebelheart #forever… https://t.co/EOGR2QYb34— Ariana Grande (@ArianaGrande) January 25, 2016 Can we expect a Madonna/Ariana collab in the future?