VIDEO : Madonna Spanks Katy Perry, Forces Her to Use a Banana Flask

Today Your source for all things celebrity and entertainment. Katy Perry is having quite the week. And nothing was different come Tuesday night when she appeared onstage at Madonna 's Rebel Heart concert in Inglewood, Calif. It turned out to be a fruit flask that Madonna forced Katy to take a shot from. "Well, that was unrehearsed but ILY @madonna my QUEEN," she wrote alongside one video. EXCLUSIVE PHOTOS: Madonna shows some skin at her daughter's birthday party A photo posted by Madonna (@madonna) on Oct 28, 2015 at 4:00am PDT "Because all popstars are code "mom" #meta @madonna #Repost @tiersz," she captioned the next .