Get a refreshing costume to wear this Halloween with this licensed Diet Coke costume for women! The grey tank dress has the Diet Coke logo printed on the front. It is made of polyester material, slips on over the head and ties behind the waist to achieve a fitted look. Top off your Diet Coke costume with the included bottle cap headpiece. The fabric bottle cap is silver and is attached to a headband. Browse our entire collection of Coca Cola costumes for fun couples and group costume ideas!