This beautiful sundress is from the 80s by All That Jazz. Made of crisp cotton. Fitted bodice with dropped waist and V yoke. The back of the bodice is all smocked elastic with center back zipper. Full skirt. Mid calf length. The pattern is a mix of blues, green and pink. Labeled a size 7/8, however, please see the measurements below for a proper fit.
Measurements
Armpit-armpit doubled 32"-38"
Waist 26"-32"
Hip 62"
Length from top of back 47"

This item is sold from an excellent, highly rated vintage boutique in Westfield, Massachusetts.