Under Armour's women's apparel category reached $1 billion in sales last year and ballerina Misty Copeland was a big part of that.
Under Armour endorser Misty Copeland gets new star turn in Disney film
In this image released by Sundance Selects, Misty Copeland appears in the documentary "A Ballerina's Tale." Copeland, an Under Armour endorser and principal ballerina with the American Ballet Theatre, has achieved a crossover fame that few dancers have achieved. Now she's signed to star in a Disney adaptation of "The Nutcracker." (Oskar Landi / AP)