Best Prom Hairstyles for Long Hair

Amanda Seyfried's retro look recalls old Hollywood glamour. "It's very Veronica Lake," says Laurent Dufourg, celebrity stylist and founder of Privé Salons in Los Angeles and New York.

How to do it: Blow-dry hair. Then, starting halfway down the head, curl hair using a large-barrel curling iron. To get a big, strong spiral in front, similar to Amanda's, use a round brush to twirl together the front pieces. Add extra sheen with a shine serum.