Katy Perry Photo: Billboard.com Katy Perry is the Billboard cover story 2 weeks after her song "Roar" was bumped out of the top spot. With "Roar" she tied Rihanna with nine number one songs. "Honestly, I'm just masquerading as a pop star."-Katy Perry "I am exhausting so much energy right now," Perry exclaims between bites of Cheez-Its -- furtive bites, because eating Cheez-Its is breaking training. "For eight days straight, I've been conditioning -- just going, going, going at the height of my physical capabilities. I'm supposed to eat meals every two hours, but it takes me an hour to think of what I want to eat, so by lunchtime, I'm starving. I'm just so hungry all the time." For more on the Billboard cover story and Barbara Walters throwing her shade, click here!