This is just the dress, a blouse is NOT included, no apron. The material is a lighter fabric, polyester, not as heavy as the German dirndls. There is a zipper on the left side. This is most likely just a knock off production just for the Oktoberfest (Made in China), not a garment for wearing on regular occasions.
Size says L, please compare measurements and consider that a blouse/shirt needs to go under the dress : 21 " from pit to pit, length measured from the back center is 39"