Earlier this year, Simpson told ET that she credits her kids for keeping her in shape. "I think being a mom is enough of a diet," she quipped. "You have to run around chasing your kids, but I do eat a lot of their corn dogs, so I have to get on the treadmill a lot to watch my TV shows."
As for whether she and husband Eric Johnson have plans to expand their brood, the 36-year-old star told ET, "I don't think I could have another baby right now. It was a very, very big shock after having a baby and four months later knowing I was pregnant again, so I think that's not in our near future."