Madonna's Rebel Heart is currently taking in various cities in North America, and the Queen of Pop has begun to follow in the footsteps of one Taylor Swift by inviting some of her musician pals up on stage with her.
Alright, maybe she's not quite at Swifty's level just yet, but Madge did bring Ariana Grande on stage to sing her song 'Unapologetic Bitch' in Miami last night.
Watch the performance - with the star-struck younger singer - below:
