Just when you were thinking, ''An aerial act? Again?'' Pink pulled out something far crazier: a full lineup of dancing lips. And not just dancing, either. They sang, blew confetti, and perform a Bathing Beauty-worthy routine — part Rockettes, part Rocky Horror — in black lace lingerie. And leading them all is Pink, somehow totally pulling off a rockabilly fauxhawk paired with sequined hot pants and suspenders, getting carried away by her lip ladies with all the grace of the lady in the moon. A