Gunne sax style dress

Not a Gunne sax. It’s a 1970’s Gunne sax style. In very good condition. I do not see any visible flaws on the dress. There are however a few stains on the lining which are not visible when worn. Dry clean only. There is not a size tag, but I estimate it is a size 7 or modern XS. Waist is 26 inches. I purchased from Charm School Vintage on Instagram last year. I added a screenshot of the measurements from the post I bought it from. Feel free to ask questions. 🧡 I put Gunne sax down as the brand for exposure 😊