Rare 1950's floral tea dress w/ matching belt

Charming vintage mid century midi dress with illustrious floral design reminiscent of water colors in shades of purple, beige, green, blue, and black. Gathered bodice with darted bust and dual zipper and button enclosures down back. Extra full pleated skirt. Material is possibly a silk blend. Fully lined interior. Made in the USA by Miss Tall America. No listed size, see measurements to confirm. Bust - 46 Waist - 28 Hips - 76 Length - 38