Jessica has a long healthy looking blonde mane here in this photo of her at the David Letterman Show.
Looks like a possible attempt at a zig zag off center part and she has a slight widows peak. The bangs are combed up and over to the side. This hairstyle looks asymmetrical in nature with one long big corkscrew curl cascading over the front side of the shoulder. This is a glamorous look for a special occasion when one is looking for option with hair worn down.