showed off her amazing post-baby body on a new Twitter pic. Wearing tight-fitting jeans, white shirts, and a pair of cowboy boots, the mother of two smiled as she worked on the set of new Weight Watchers campaign.
"Couldn't stop smiling on set for my new @weightwatchers campaign today! #happy," the 33-year-old wrote alongside the picture. Simpson gave birth to her second child, a baby boy, in June. She found out she was pregnant with him when daughter Maxwell was only seven months old.