Though a New Year it may be, Madonna’s Rebel Heart tour continues to chug along its worldwide route, with a Miami stop last night that include the onstage contributions of one Ms. Ariana Grande. During the show-closing “Unapologetic Bitch,” Madge welcomed Grande — high pony and all — to her tightly choreographed show with a spank and a runway walk-off (h/t PopCrush). Watch below, and look for Grande’s third album later this year.
