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Katy Perry sparks frenzy after posing topless in daring backstage photo
What's more, the song, a collaboration with Alesso, has made history already."[I partnered] with Alesso to become the first artist to ever debut a global music video within a live event on ESPN," she explained in a press release.A flurry of support came in from the millions of followers who were glued to Katy's feed.Sally Kohn spotted the "Do Not Hose Down" sign on the wall next to Katy in her cover photo and wrote back from her blue-ticked account to cheer her on: "DO HOSE DOWN.