This is a vintage Jessica McClintock white raised floral crochet bodice and back dress with a drop waist. It has a pleated gathered skirt and a side zipper. It has long sleeves with slight gathering at the shoulders. It is missing its tag for what it is made of but it feels like a linen cotton blend. There is also no size tag but should be a small. See measurements.
Measurements:
Arm pit to arm pit: 18 1/4"
Sleeve length from shoulder seam: 21"
Length from front top collar: 45.5"
Waist: 13"
Hip: 17"