Dark denim mini skirt with zipper front

Took the tags off of it and it just sat in my closet until I tried it on and unfortunately it is way too small for me. I have a big behind and it felt skimpy in the back. It is technically a size small but I am listing it as a XS because I want you to know how mini it is. I usually wear a S in Forever21 skirts but I found this skirt to be particularly tiny!