• JESSICA SIMPSON photo | Jessica Simpson

Credit: Courtesy Jessica Simpson

Published: Friday December 13, 2013 11:05 AM EST



She's back in her Daisy Dukes, so it might be smart to steal Simpson's tip for staying motivated on the treadmill: cute sneaks and a workout buddy! "Nothin' motivates us for our workout more than some Johnson," she adds of her athlete fiancé's football jerseys.