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2012 Billboard Music Awards - Arrivals

LAS VEGAS, NV - MAY 20: Singer Carrie Underwood arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Jon Kopaloff/FilmMagic)

Carrie Underwood Turns 30: Her Style Evolution

The country singing sensation turns 30 on March 10. As a special birthday treat, we're looking back at her changing style – from her days as an “American Idol” newbie to her high-fashion looks now that she’s a bona fide star.