Women's Vintage Sz 8 but fits like a Sz 3?? Coca-Cola Stonewashed Denim Skirt.

Woman's Vintage Coca-Cola Stonewashed Denim Skirt, Says Sz-8. but fits like a Sz 1-3?, Waist measures a 27/28"?? with sewing tape measure..13 1/2" across waist,,From Waist to Hemline is 22" long, I wear a Sz 5 so it's way to tight for me now. Has 1 Button & Zipper in Front. Has deep pockets in front and has bk pockets, has a leather Coca-Cola Vender Tag sewn in & on 1 bk belt loop. but has 2 belt loops in front and 3 belt loops in back. In Excellent Condition!!