05/16/2013 11:38 EDT | Updated 05/16/2013 11:46 EDT

Tori Spelling's Birthday: 'Beverly Hills, 90210' Star's Style Transformation (PHOTOS)

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Tori Spelling, who captured the hearts of a generation with her on-screen character ditzy teen Donna Martin in "Beverly Hills, 902010," turns 40 on May 16.

The celebrity mom, who has four children with husband Dean McDermott, has seen her share of style mishaps over the years (and they don't include the red disaster hoop dress Donna wore to the spring dance in Season One.)

From lingerie-inspired frocks to revealing glamorous gowns and comfy maternity looks, the author of tell-all books sTORI Telling and Mommywood was a style icon of '90s and early aughts fashion. (Remember her amazing '80s brunette hair?)

So to celebrate our favourite TV teen, we round up the best Tori Spelling red carpet looks throughout the years. Time to break out those "90210" DVDs!

Photo gallery Tori Spelling's Style Transformation See Gallery