Way After School Girl Plaid School Costume Large. From the Magic Silk Cheap Thrills collection this style school girl costume includes: Lycra top ties in front and features capped sleeves. Micro mini skirt has flutter hem and elastic waist. Playful black top complete with a red plaid skirt. Knee high socks shown on model, not included. Sold separately. Adult school girl costume is made using a blend of 85% Nylon, 15% Spandex.