Country singer Jessica Simpson got into the national spotlight when she starred in "Newlyweds" with her then-husband Nick Lachey. Part of her gimmick(well, we'd like to think it was a gimmick) was her bafflingly ditzy personality. Only natural that her blond hair became a big part of her marketable persona. Like many girls after a bad breakup (and many celebrities with hairstylists on call), she tried a new, darker look on for size. Since then she's gone back to the bleach (it's dangerously addictive) and returned to ditzy roles in B-list movies (like "The Dukes of Hazzard" and "Blonde Ambition"). Maybe she should've stuck it out with the brunette look.