Is it Carrie Underwood? Jennifer Hudson? Kelly Clarkson? Based on a combination of album sales, track sales and radio plays, Billboard has just determined the most successful "American Idol" to date.
She was the first and according to Billboard, the favorite! The publication named Kelly Clarkson the most successful, with the singer having 10.6 million album sales, 15.9 million track sales and more than 4.2 million radio plays.
Rounding out the top five are Carrie Underwood at number two...
ET Online —
Is it Carrie Underwood? Jennifer Hudson? Kelly Clarkson? Based on a combination of album sales, track sales and radio plays, Billboard has just determined the most ... more info