Best Prom Updos

Michelle Trachtenberg's updo looks low-maintenance, but it's also totally sophisticated.

How to do it: Smooth volumizing mousse through hair while it's still wet, advises celebrity stylist Ron King of bô Salon in Austin, Texas. Let air-dry. Then, twist top layers around a medium-barrel curling iron. Pull one tendril down asymmetrically across face and curl with a small-barrel curling iron. Pull the rest of hair back into a pretty bun or chignon. Secure with plenty of bobby pins.