I ordered these shorts and the matching top in my regular size (Large in the shorts, medium in the top. I typically wear a size 12) and when I tried them on today I thought they ran a bit small. The shorts were little tight in the hips and the top was a bit tight in the chest. Both were fine in the waist, but I'm going to return both for the size up just to be more comfortable. Otherwise, the design is great! Love the embroidery and the details on the top. I would definitely size up if you like your PJs a little loose!