When you're one of the most popular pop stars in the world it takes a lot to survive.  Katy Perry tells Vh1 what it takes after the jump.

Katy is currently on her California Dreams Tour and is in Australia and New Zealand right now.  She'll be back here in the states beginning June 7th and she's playing the Verizon Theatre at Grand Prairie on Thursday, July 28th.

You have your tickets yet?  See if there are any left!

If you haven't seen it yet, here's the video to her latest song called E.T.

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