Jessica Simpson Fits in Post-Baby Workout Pictures

Jessica Simpson fit in a workout today with a personal trainer in LA. The new mom is wasting no time getting back into an exercise routine and flashed a big smile from her car after the one-on-one session. Jessica gave birth to baby Maxwell Drew Johnson just one month ago. Maxwell made her public debut with a sweet cover shoot in People on May 30, and later that week, Jessica announced she would be joining the long list of celebrities who have endorsed Weight Watchers as the brand's latest spokesperson.

Beyond her new roles as a mother and as the face of Weight Watchers, Jessica is also keeping busy with her style empire. Jessica is designing a line of maternity clothes that she says will feature plenty of denim, leggings, flowing maxis, and vintage-print tops. The collection is due in stores this Fall.