Vintage 60s cotton muumuu / caftan / beach party dress

Comfy, long loose tunic-y summer column dress- I believe it’s from the 60s. All cotton, in a sweet pink and green flower sprig pattern. It even has pockets! Gently used condition with no holes or heavy wear. Two stains on the right front below the waist as shown in last few pics. Blends in with the pattern so it’s not too noticeable. No tags, so please look closely at bust measurement to make sure it will fit!