|Kelly Clarkson and Carrie Underwood (QMI Agency, WENN.COM)
Singer Kelly Clarkson has surpassed Carrie Underwood as American Idol’s best-selling singles artist of all time.
Clarkson, who was the talent show's inaugural winner in 2002, edged past the country star's record this week after her new girl power anthem Stronger (What Doesn't Kill You) reached sales of 3.51 million.
Underwood's break-up ballad Before He Cheats, which was released in 2006, will now sit in second place, unless the blonde beauty can notch up another 10,000 sales to close the gap, according to American media research company Nielsen SoundScan.
However, 29-year-old Underwood has remained victorious in overall album sales, selling 1.5 million more copies than Clarkson.