Nothing comes naturally for Katy Perry. Blessed with a cheerleader’s body, the face of a second-chair clarinetist and a drama club queen’s lust for the spotlight, Perry parlayed all these qualities into success via her 2008 pop debut One of the Boys, an album that worked overtime to titillate. Working hard is Katy Perry’s stock in trade: whether she’s cavorting in the Californian sun or heaving her cleavage, she always lets you see her sweat, an effect that undercuts her status as a curvy Teenage Dream, the ideal she puts forth on her 2010 sophomore set. All this labor produces fetching magazine covers -- sometimes accompanied by good copy within -- and grabbing videos but it undoes her records, since we always hear her fighting to be frivo ... See more