Run small
I wear a 4-6 in women’s (27-28 in waist) and like my pajamas oversized so I ordered the men’s medium instead of a women’s. The waistband is more snug than I would have liked for sleeping. Since there is a drawstring anyway, I wish they would have left the waistband with more flexibility. Otherwise the pants are so soft and cute, I am hoping the elastic will stretch out.