Singer Kelly Clarkson poses backstage during the "Idol Gives Back" show at the in Los Angeles in this April 25, 2007 file photo. [Agencies]

Clarkson was named fifth on Mr. Blackwell's 48th annual Worst-Dressed Women list, with the fashion critic saying " Her heavenly voice soars above the rest...but those belly-baring bombs are hellish at best! She may be the queen of "Pro-Active" - but that wardrobe looks downright radioactive!"