Batik dress

Vintage Batik flowy dress, I bought this in the 90’s on Key West. It has a lovey neckline and the back has a nice wide opening, not too low. Pattern is bright and beachy. It is below the knee in length. It is Caribbean turquoise, dark blue with hints of purple and green. It says it is one size fits all. I was a large on the top when I got it. It fit perfectly. Now I am XL on top and it’s not comfortable. So I am calling this a large. Dress is rayon, zip up the back, non-smoker.