Harry Potter Potions Skirt Size 12 NWT Approx 16” across waist and 20” long center front, waist is elastic Snape might yell at you for being late to class for taking extra time to get dressed, but at least you'll be in Slytherin colors, looking good, and in theme with Potions class! This dark green skirt features an elasticized high waist with rounded gunmetal buttons. It's got a black lace overlay and matching border print featuring several potion ingredients.