The incident occurred during the singer’s show in Inglewood, California on Tuesday

Madonna invited Katy Perry onto the stage during her show in Inglewood, California on Tuesday night (October 27), with Madge proceeding to spank the younger pop star.
Madonna is currently in the middle of her ‘Rebel Heart’ tour, with Perry joining her last night for a performance of her track ‘Unapologetic Bitch’.
Following the live collaboration, Madonna directed her dancers to bend Perry over before she spanked her and called her fellow star a “bad, bad, bad girl”. Watch below.
Perry was also forced to “drink out of Madonna’s banana”, before she shouted “I love you mom!” and exited the stage.
Back in September, Madonna likewise spanked Diplo and handed him a banana at her show in Montreal.
Meanwhile, Madonna has denied that artistry decreases with age, stating in a new interview that there’s no “expiration date for being creative”.The star compared herself to Cubist painter Pablo Picasso in interview with Billboard, stating: “He kept painting and painting until the day he died. Why? Because I guess he felt inspired to do so”.
“Life inspired him, so he had to keep expressing himself, and that’s how I feel”.
She added: “I don’t think there’s a time, a date, an expiration date for being creative. I think you go until you don’t have any more to say.”
Read more at https://www.nme.com/news/madonna/89328#IGLMAXvWJOYj024m.99