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Katy Perry

Empress Of does a mellower rendition of Katy Perry's iconic hit "Hot N Cold."

Graduating from singing the gospel to tying Michael Jackson's record to concocting a confectionary fantasy world and entertaining millions, the superstar singer documents her journey in the concert movie "Part of Me.

Katy Perry has never been one to shy away from outrageous outfits, a tradition she continued at JazzFest in New Orleans on Saturday afternoon.

Photos from The Big Picture: Today's Hot Photos

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