Apologize. Don't know how to turn the photos. It looks like it might be 60's or 70's, because of how it falls, for all I know, but I'm still so new at this, that I don't even know if it's even vintage. It looks like the trim on the collar was hand set bc it's not uniform everywhere (see below my freckle) . In some places, it dips. No serge on any of the garment. No tag. It's rayon, probably (?). Very sheer, I have to wear a white slip underneath, and that's what you see below the hemline. On the dress, the inside liner is a tad shorter than the hemline.
I think this is - because of the fabric and finishing - contemporary not vintage. Still pretty. About turning the photos... if you go into edit you should be able to rotate the photos.
Agree. It's modern. Appears to be nylon it maybe polyester. Very synthetic. Lining - or the sheer white part is all serged (overlooked), seams and hem.