I bought this gown as a sample and have never worn it. It does not need cleaning. The fabric is just beautiful and it also has pockets! My venue changed and this particular dress, while beautiful, doesn't fit the venue.
There are covered buttons that go to the waist on the back and the back is very flattering coming to a low V shape. The train is a simple chaple length.
The sash did not come with the dress, I was planning on purchasing one just like this on Etsy for around $40....