Mara Hoffman swim coverup tunic dress, size small

Beautiful Mara Hoffman tunic style dress/swim cover up. This could be a size medium as a dress but as a cover-up, I believe small would be more appropriate size recommendation. Made in Portugal 69% linen, 31% tencel Measurements laying flat: Pit to pit 20 1/2” Waist 18” uncinched Shoulder to bottom 49 1/2”