DisguiseThe Incredibles Mrs. Incredible Classic Costume, Official The Incredibles Adult Costume

I typical wear a 16 in pants so i’m wondering if i should get the xl then because of it being labeled for sizes 18-20. thoughts on the sizing?

Does this zip or Velcro?

Do we go with pants size or shirt size?

Does it run bigger or small? I’m a large but sometimes larges don’t fit