In general, adult womens garments are sized smaller than mens, so be prepared to order a larger size for a good fit. What size should men choose when wearing a womens costume? When a man selects a womans costume tow ear for Halloween, mortal kombat costumes it is important to look at the specific measurements in the sizing guide and compare them to their own measurements. If you are not satisfied for any reason you can return the Mask for a full refund.