Betsey Johnson (CLOSED)

In step with this exuberant, cartwheeling designer, who once employed Edie Sedgwick as her shop's model, the superfemme party dresses at this boutique exude a hip, retro vibe. Leopard-print everything, lacey lingerie and '50s-style pin-up glamour attract savvy teens looking for prom outfits and grown-up lasses seeking adorable, young-at-heart pieces.