Katy Perry: Will You Be My Witness? - Official Trailer

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Katy Perry: Will You Be My Witness? - Official Trailer with tags katy perry: will you be my witness, katy perry, youtube red original movie, youtube red originals, youtube red, james corden, gordon ramsay, anna kendrick, jesse tyler ferguson, neil degrasse tyson, roy choi, laura lee, kandee johnson, patrick starr, michael ian black, deray mckesson, rupaul, ana navarro, caitlyn jenner, fly on the wall productions

Watch the official trailer for KATY PERRY: WILL YOU BE MY WITNESS?, a YouTube Red Original Movie. Premieres October 4!

In her new YouTube Red Original Movie, the colorful pop icon puts her life on camera 24/7 for four whole days, in her most intimate reveal yet. Join Katy as she does behind-the-scenes in the creation and aftermath of this unprecedented live-streaming event with friends, artists and celebrity guests.