The pop performer cozied up to Lenny Kravitz on "I Kissed a Girl," but then allowed herself to be upstaged by the boss, Missy Elliott. It was either a rare display of self-effacing inter-generational respect or a major miscalculation for a headliner, but Perry allowed herself to be rendered superfluous in her own show. She became like wadded-up bubblegum stuck to Elliott's shoe.
