Katy Perry, who will be taking her 'California Dreams' tour out on the road soon, has revealed that she's on a meal plan in preparation for the extensive string of shows. 

Speaking to RollingStone.com, the 'Hot 'N Cold' pop star explained:

"After this interview I'm going to have a nice healthy breakfast. I'm on a meal plan, which absolutely sucks— but on Sundays I get to have a cheat day where I go buck wild and eat In-N-Out Burger. Then I'll work out, go to a vocal lesson, run through the entire set at rehearsals, go to dance rehearsal until 10:00 p.m. and then go home and sort through e-mails concerning the production. I feel like I'm training for the Olympics!"

Her special diet is in preparation for her costumes, which are set to be even more extravagant than her usual order of latex and bodysuits. 

"It has some pizazz these days, and I'm definitely bringing the pizazz with a lot of bells and whistles. This show has a Broadway feel to it. It's got a story line that's going to be very interesting, kind of loosely based on my life, but a cartoon version."

Watch Katy Perry's performance at the Teen Choice Awards below: