Julianne Hough, Kellie Pickler Salute National Guard Youth Foundation

Julianne Hough and Kellie Pickler performed for guests at the fourth annual Challenge Champions Gala on Tuesday night (Feb. 24) in Washington, D.C. Other guests at the event included racecar drivers Dale Earnhardt Jr., Jeff Gordon and Dan Wheldon, as well as actress Kerri Turner (JAG) and emcee Kelly Perdew (The Apprentice). The foundation provides training and education to high school dropouts who have decided to pursue higher education, enter the workforce or join the military.