LOS ANGELES, April 24 (UPI) -- Never one to shy away from a costume change, Katy Perry plays a clown, an aging dancer, a Bar Mitzvah MC, an animal expert and a princess in the music video for her latest single "Birthday."
The central conceit of the video is that an unrecognizable Perry wreaks havoc at a series of real-life parties, including one man's 90th birthday celebration.
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