Unionbay 100% Cotton Medium Wash Jean skirt. Size 14

Unionbay 100% Cotton Medium Wash Jean skirt. Pockets in front and back. Slit in center back. Skirt doesn't have much stretch to it and seems to run small.Please see flat lay measurements. Waist 13.5 Length 21 skirt is labeled as a size 14. Not sure if its a children's size or just runs really small.