Lauren Conrad -- the one former MTV star who managed to parlay her time in affluent Laguna Beach for even greener Hollywood $$$ pastures -- has just added hair care spokeshead to her ever growing resumé.

LC has had many successes since the cult-favorite show left the airwaves. She's a three time best-selling novelist, a successful fashion designer and head of one of the Internet's most popular beauty destinations. Now, the 28 year-old multi-hyphenate, who's engaged to lawyer-to-be William Tell, has been tapped to represent John Frieda haircare's new "Keep Up With Your Blonde" campaign.

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According to the hair care giant's official release this morning, "This new program empowers blondes to maintain their best color with a regimen of expert care and celebrates the bold confidence that accompanies vibrant fresh color. The innovators at John Frieda Hair Care understand that when your blonde is on, so are you."

Conrad, famous for her ombré says, "Being a blonde is a part of who I am. As someone who lives in California, it takes work to keep my color light and bright. I use the Sheer Blonde collection because I know that from tone correcting, to lightening, to highlight enhancing, it will help me maintain the blonde I love."