This is lounge wear from Wacoal. The material is unknown, but it can be machine washed on a delicate cycle. It has cups inside the bust. According to measurements taken using the Mercari guide: Shoulder width: 34cm, Bust: 39cm, Length: 120cm. The hem is hand-stitched and folded over by about 8cm, so it can be made 8cm longer if unstitched. How about it for a small party or something similar? Thank you very much.