Then: The No Doubt front-woman stole the spotlight with bright hair and over-the-top makeup.
Now: The style icon makes her mark with sleek updos and signature red lips.
Tip: Want to re-create Gwen's makeup look? Check out this how-to video.
Images taken in Universal City, Calif., on September 9, 1998, and in New York City on September 5, 2007
Images: Getty Images
Photo 6/12
Jennifer Garner
Then: The former TV spy's simple center part and barely there makeup didn't exactly cry "prime-time queen."
Now: The movie-star mom knows how to make a statement on the red carpet with classic, yet glam hair and makeup.
Tip: Want help creating a gorgeous updo like Jennifer's? Check out this Quick, Easy Updo video for step-by-step instructions.
Images taken in Hollywood, Calif., on December 7, 2000, and on February 24, 2008
Images: Getty Images
Photo 7/12
Christina Ricci
Then: Despite her cute layers, she couldn't seem to shake her Wednesday Addams persona.
Now: She's seen the light -- hair color, that is. It softens her overall look.
Tip: If you color your hair, keep it healthy with weekly deep conditioning treatments. See which ones are best by reading these hair mask reviews.
Images taken in Santa Monica, Calif., on September 25, 1998, and in New York City on September 7, 2008
Images: Getty Images
Photo 8/12
Heidi Montag
Then: She was a cute teen with minimal hair and makeup.
Now: Long hair extensions (and some plastic surgery) have helped morph her into a reality-show glamazon.
Tip: When clipping extensions into your hair, spritz it with hairspray first to give it more grip so the extensions stay on better. You can also tease the root of your hair for more grip.
Images taken in Hollywood, Calif., on July 7, 2006, and in Universal City, Calif., on June 1, 2008
Images: Getty Images
Photo 9/12
Claire Danes
Then: She embodied the fresh-faced, tomboy look in her teen years.
Now: She's all grown up with feminine hair and a beautiful bronze glow.
Tip: Try layering bronzer (see Top Rated Bronzers to find one you'll love) and blush on the apples of your cheeks like Claire did for a natural-looking glow.
Images taken in Hollywood, Calif., on July 25, 1998, and in Toronto on September 5, 2008
Images: Getty Images
Okay, so none of these women were ever ugly, but all of them used hair, makeup and even surgery to go from blah to stunning throughout their careers. Here we present our gallery of the most noticeable celebrity transformations. Do you like their original look or their new one better?
