Cover Girl signed two new faces, and both are athletes: boxer Marlen Esparza, right, and beach volleyball player Jennifer Kessy, left. Kessy and Esparza will compete at the London Olympics this summer — and they make a bit of a change from the roster of actors, singers, and models who usually shill for Big Makeup. "You… » 4/05/12 2:35pm 4/05/12 2:35pm