Singer and former &#39;American Idol&#39; contestant Kellie Pickler and her partner Derek Hough received 21 out of 30 points from the judges for their Cha Cha Cha routine on the season premiere of &#39;Dancing With The Stars,&#39; which aired on March 18, 2013. <span class=meta>(ABC Photo &#47; Adam Taylor)</span>
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