When it comes to "American Idol," Kelly Clarkson is still the first and the best.
By adding up album sales, song sales and radio play counts, Billboard put together what they're calling "the true top 24 'Idols' of all time" -- and Kelly's #1.
Coming in second place is Carrie Underwood, followed by Chris Daughtry.
Check out the full list at Billboard.com.
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