Purchased this costume for my wife we were concerned about the size so she got the larger size and didn't need to. This costume runs big so it should be true to size when you order one. She thought it was quite comfy. Only problem was the horns which are not the best quality. They are stuffed but not sewn so the stuffing in the horns just hangs there in the holes and they don't stay errect very well. Other than that the costume was a big hit.