Keri Hilson taught the audience at “The Ellen DeGeneres Show” how to do the “Pretty Girl Rock” earlier this morning, singing the sassy single off her sophomore album No Boys Allowed. Backed by four dancers, the blonde bombshell sang the feel-good song while wearing a white button-down shirt with her midriff exposed, knee-length pants, and black heels, mixing James Blunt’s “You’re Beautiful” into the upbeat jam. Do the “Pretty Girl Rock” below. -Rap-Up