News Madonna Spanks a Giggly Ariana Grande Onstage in Miami By Elizabeth VanMetre 9:27 AM PST, January 25, 2016 Getty Images Madonna can officially add Ariana Grande to her impressive list of celebrities she’s spanked on her Rebel Heart Tour. The “Bang Bang” singer joined Madge on stage Sunday during her Miami performance, which marked the last of her US shows on her world tour. WATCH: Jillian Michaels Says She Was 'Homophobic' Before Madonna's 'Justify My Love' VideoMadonna took to Instagram to gush over the star, calling her the “Kewtest Unapologetic Bitch EVER!!” View this post on InstagramA post shared by Madonna (@madonna)Ariana naturally was just as excited.“I am dead. @madonna thank you for the spanking & the banana,” she captioned a video featuring her dancing on stage with the Material Girl.The banana Ariana is talking about is a flask that Madonna has shared with many other celebrities including Katy Perry, Jessica Chastain and Amy Schumer! While Madonna gave a nod to the pop princess, she also honored another little girl close to her heart.The “Bitch I’m Madonna” singer brought her 10-year-old daughter, Mercy James, on stage, while the crowd sang her “Happy Birthday” and her mom offered her a cupcake with a candle on top.View this post on InstagramA post shared by Madonna (@madonna) WATCH: Madonna Pays Tribute to David Bowie With 'Rebel Rebel' Cover at Houston Concert Madonna has been holding her children close to her lately while going through a custody battle with her ex, Guy Richie, over her eldest son Rocco.Despite everything, she appears to be trying to stay positive. Watch the video below to see the sweet message she recently posted.Madonna Shares Touching Photo With Son Rocco Amidst Custody Battle This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page.