Singer Katy Perry hosts 'Katy Perry: Witness World Wide', an exclusive event where fans around the world get a sneak peek into her new album Witness, non-stop through Monday, June 12 exclusively on Katy's You Tube channel, on June 11, 2017 in Los Angeles, California.
(June 10, 2017 - Source: Neilson Barnard/Getty Images North America)
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