"This costume is adorable. It definitely runs very small...I got the XL for my typically size 8 child and it fits well. She loves the costume, it is super cute, but her immediate complaint is that the lace at the neckline is itchy. After trying it on for 2 minutes her skin was all irritated. I think I'm going to remove that lace border with a seam ripper because it's very scratchy. But we like the costume!"