SKS Womens skirt Size S Fits more like M

Darling black and white skirt. Calf length 26”. Size is small but waist is 15 1/2 laying flat. Fits more like a medium. Elastic waist band and lays flat. Worn once. Perfect condition. Has a cute flair at the bottom. I just moved and need room in my smaller closet. BUNDLE AND SAVE ON SHIPPING!