Hana silky teal floral print maxidress/house dress/swim coverup women's medium

Silky teal floral maxidress/swim coverup/house dress. The brand is Hana. The fabric is very lightweight and feels like silk, but it could be viscose or polyester; there is no material or care tag. Button placket with a tie at the neckline. Pull-on styling. The floral print is beautiful. Tag says size medium. Flat, it measures 20 inches pit to pit with no stretch, and it's about 50 inches long. The hem and the sleeves appear to be handstitched. No idea of its origin.