Vintage rainbow maxi dress

Vintage maxi dress with rainbow detail on bust area. There is some gold metallic thread in the striped material. Authentic to late 70s/early 80s. There is no size listed on the tag so I would be happy to take measurement, if needed. I would say about a size 2 or 4 in street size. Waist: 24” (there is give) Bust: 26” (there is give) Excellent used condition. No visible wear and tear to the dress. Sad to say goodbye to this gem. Open to reasonable offers!