Marimekko Aronia watercolor rainbow dress 50s look

Finnish designer Marimekko belted dress. Lined in silk. Worn only once (for an incredibly stressful PhD qualifying exam, which is probably why I've not worn it again! Haha). The dress itself has no waist - the belt creates it, so the sizing is limited only by the shoulders and sleeves which would probably accommodate a 2 through a 6 or so.