From frumpy to fabulous or dazzling to dumpy, these celebrities set the example for how to transform your look -- for better or worse.

Scarlett Johansson made her mark on beauty blooper history when she went through her Ziggy Stardust experimental phase.

A few short years later, Miss Scarlett strikes a look that could leave anyone dumbstruck with admiration. Sophisticated, sexy and gorgeous.

Uma Thurman's classic, high-end looks don't require a lot of decoration, but they do demand respect.

Ms. Thurman's stringy, messy updo doesn't do her face justice. Why hide a work of art under a tangle of bangs? While a devil-may-care look can be sexy and flattering, this look has gone to the devil completely.