I'm selling this because I haven't had a chance to wear it. I received it from a friend, and I haven't worn it even once. The back has a wide open design, so it would look nice with an inner layer that's meant to be seen, like one without bra straps. The waist has elastic, and it has a back zipper, making it very easy to put on. It gives a nice silhouette, so it's very cute. Size S (For a 155cm tall person, the hem is about as short as shorts)