Vintage 1970s/80s semi-formal sleeveless maxi dress. Sheer bolero jacket

Gorgeous, and in excellent condition. No rips, tears, snags. There are a few very faint marks on the bottom right side of the skirt. See picture #4. Very hard to see in all light, hard to capture in pictures. Zoom in to see. Recently machine washed and hung to dry. 1970s or 80s. Dress feels like classic 70s polyester, matching sheer bolero jacket feels like soft polyester. Was probably a bridesmaids dress. Make an offer and have fun styling this vintage beauty!