Rattling the hen cage

The bachelorettes invade Provincetown

You see them marching down Commercial Street in bejeweled armadas--three, four, sometimes 10 deep--sheets of flat-ironed hair slapping at the tiny straps of their backless minidresses, and airbrushed makeup the hue of Easter decorations. As they trot by in their towering heels, horror seeps from the faces of the beach bum locals, who consider whether to…