No, on the show she never mentioned having PS. She does workout a lot with her sisters and when the babies where a few months old, she would still go to the gym. It also doesn't look like she is wearing a girdle. I am shocked she doesn't really have a stomach. She went dress shopping with her mom and sisters once, and tried on a couple of fitted dresses. She does have a bit of a pooch, but nothing like a woman that just had 5 babies. I remember when Kate Gosslin had her kids, her stomach was a hot mess (she showed it to the camera) and looked like she was 3-4 months pregnant even when the kids were a year old.