Prismatic world tour

American Idol's Katy Perry certainly knows how to roar, with new songs, tours and videos as explosive as any firework. Our Katy Perry news reveals what she's up to on Instagram and Twitter. And while John Mayer and Russell Brand are ancient history, we have the newest intel on Katy Perry's relationship with Orlando Bloom. Want Katy Perry perfume or learn the story behind her new tattoo? Or perhaps you just want hair and makeup tutorials to recreate one of the hairstyles Katy Perry snapped in…

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The Prismatic World Tour

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Just a few educated guesses.

Should we even be surprised?

While Miley Cyrus was proving she’s just as provocative as ever in London, Katy Perry took to the stage in Belfast in far more bubble-gum fashion.

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