Singer/Songwriter Carrie Underwood performs during CMA Music Festival Day 1 at LP Field on June 10, 2010 in Nashville, Tennessee. (Getty Images)more pics »American Idol has seen more contestants come and go over the years than we can count, but some are inevitably greater than others. At least as far as album sales go, that is. Who are the top-sellers?
Singer Carrie Underwood poses backstage at the 25th Anniversary Of Cedars-Sinai Sports Spectacular held at the Hyatt Regency Century Plaza Hotel on May 23, 2010 in Los Angeles, California. (Getty Images)more pics »It's good to be Carrie Underwood. The country singer has sold a total of 11,766,000 albums, and she's only recorded three -- a huge accomplishment for someone who was unknown just a few years ago. Underwood was the winner of the fourth season of the show.
Singer Kelly Clarkson performs onstage at the 2009 American Music Awards at Nokia Theatre L.A. Live on November 22, 2009 in Los Angeles, California. (Getty Images)more pics »Season one winner Kelly Clarkson isn't far behind, having sold 10,567,000 albums (she's recorded four). The pop star is almost always on the road touring, too, which likely makes her a bundle.
Chris Daughtry of the musical group Daughtry performs onstage during the 2009 American Music Awards rehearsals held at Nokia Theatre L.A. Live on November 22, 2009 in Los Angeles, California. (Getty Images)more pics »Of all the Idol contestants who weren't actually voted winners, Chris Daughtry has enjoyed the most success. The season five singer came in fourth place, but he's still sold 5,805,000 albums. He's recorded two.
Singer Clay Aiken performs during the "Hit Man: David Foster and Friends" concert at the Mandalay Bay Events Center May 9, 2009 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images) *** Local Caption *** Clay Aiken (Getty Images)more pics »Season two runner-up Clay Aiken is doing well, too. He's recorded a whopping seven albums -- much more than others on this list -- and he's sold 4,897,000. Not too shabby.
Singer Ruben Studdard poses backstage at the 31st Annual American Music Awards at The Shrine Auditorium November 16, 2003 in Los Angeles, California. (Getty Images)more pics »Ruben Studdard couldn't beat Aiken in sales, but he did beat him on the actual show. It just goes to prove that it's hard to predict which stars will become true sensations once they're off the stage and in the studios.
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