Kelly Clarkson Entertains Sold-Out Crowd At RodeoHouston On Saturday (March 14), Kelly Clarkson performed for a sold-out crowd at NRG Stadium during RodeoHouston. CultureMap Houston reports that 70,007 people attended her show. Clarkson, a Texas native, first performed at RodeoHouston in 2004, just two years after she won American Idol. That was also the last […] More Country Music Nation