Movie & TV Fashion

The 24-year-old from Oklahoma and winner of season four has transformed from a small-town girl to a sophisticated superstar. "If you try and sum up what star quality is," says judge Simon Cowell, "it is a sense of style—a sense of knowing who you are, a sense of being an individual and obviously having a good voice." Underwood's got it all. Last year, she was named one of People magazine's Most Beautiful People and PETA's Sexiest Vegetarian. This trim beauty has three Grammys under her belt and is nominated for four this year.

Look back at Carrie Underwood’s Idol Style at American Idol’s Official Site, americanidol.com.