Black Dual Strapless Dress and Foldover Skirt Size small

This can be worn as a dress or a skirt with the top folded over. It's an elastic fabric that's pretty lightweight and easy to hand wash, but it doesn't list what the fabric is anywhere. There is a flowing relaxed style shirt that I'm unable to capture while taking a photo. This has bee only worn around 3 times and is in good shape. However, in places the texture indicates it once rubbed against a bench or something similar. The dress cost around $140 in 2010.