04/20/2012 11:14 am ET Updated Oct 11, 2012

Valerie Bertinelli's Style Evolution: From Good Girl To Real Woman (PHOTOS)

Valerie Bertinelli has grown up quite a bit since her days as a spunky teen on "One Day at a Time." In the 37 years since the '70s sitcom, the Delaware native married and divorced a rock star, waged (and won) a very public weight loss war with herself and then reclaimed the spotlight with a big television comeback. Although she wasn't as notorious for drug addiction as her ex-husband Eddie Van Halen, Bertinelli also battled substance abuse and years of "destroying" her body despite her good-girl image.

After filing for divorce in 2005, the petite brunette got serious about her appearance, lost over 40 pounds (see the "after" photos here) and became a Jenny Craig spokesperson. The actress returned to the small screen in 2010 when she signed on to TV Land's "Hot in Cleveland" along with Betty White. The show's success coupled with Bertinelli's weight loss put her back on the red carpet and into LBDs. With her new marriage to financial planner Tom Vitale, new body and renewed television success, we think there's a lot for this "girl-next-door" to smile about.

In celebration of Bertinelli's 52nd birthday on April 23rd, we're taking a look back at the trendsetter's style. Vote on all of her looks in the slideshow.

In related news, read up on Bertinelli's secrets behind her bikini body.

Flip through our many other Style Evolutions.

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