The body of this run VERY large, but oddly the headpiece doesn't seem to. I'd recommend ordering a size down based on how this fit my 1 year-old (who was 21 pounds and 29 inches tall at the time). The wings are pretty flimsy, but let's face it; this is a costume for a baby, so the fact that there are no wire bits is actually a plus; I only mention it because of how they look in the photo. Anyway, it did the trick and she had a very happy first halloween.