Designer Halloween Costumes Wizardess Costume. A mystical beauty if ever there was. Your Halloween will be positively perfect in this designer outfit. Super deluxe costume for women includes: the conical wizardess hat, the long skirt, the wizardess costume overdress, the vest and the waist tie. Sizing Specs: fm64559 Small (2-6); fm64560 Medium (8-12); fm64561 Large (14-16); fm64562 X-Large (18-20).