Le Secret d'Audrey

Get high.

"Updos flatter a high neckline," says Jonathan. "Mainly because a higher cut takes away from the length of the neck, especially if the material is dark." He points out the fact that darker fabrics remove the illusion of length and space, whereas lighter colors create a longer neck. The higher the neckline, the higher your hairstyle should be. He recommends going with an updo such as a top knot or a braided chignon, which provides length to the back of the neck

Bring sexy back.

Updos are also perfect for an open back dress. If you're opting for this cut, you likely want to show it off. Holly Pistas, artistic director and hair designer at Gordon Salon, suggests a look that is up and off the neck. "Keep hair up towards the crown of the head or brought to the front to keep it clean and sexy," she says. "Long hair can be curled and pinned to one side for a sultry feel."