What's Her Best Look?

Changing hair colors, makeup and cuts is all in a day's work for a celeb. Vote on which style works best for Sophia Bush, Jessica Simpson and more. By Melissa Liebling-Goldberg

Credit: Succo Media/WENN; INF; Chris Weeks/WireImage

Updated: Thursday May 31, 2007 | 06:00 AM EDT

JESSICA SIMPSON

Ever the hair chameleon (thanks to her own line of extensions), the singer showed off a chin-grazing bob, shoulder-length waves and cascading curls – all in a 10-day span!