#10. Carrie Underwood (29)
After winning Season 4 of American Idol, Carrie's debut album Some Hearts rose to #2 on the Billboard album chart. She's since gone on to win five Grammy awards, five CMA awards and nine American Country Awards. Her latest album Blown Away is currently among the top-selling albums of 2012 so far and she'll be co-hosting the CMA Awards for the fifth time this year.