Hello,

Up for bis is a Size XS or S (See Measurements Below) 
Vintage Gunne Sax by Jessica McClintock 
Iridescent Purple to Black Color Changing 
Corset Top Party / Prom Dress 

It has a Loosely Puckered Corset Top area * 
A Black Floral Front of Corset Applique * 
A Pinch Puckered Top of Skirt Area * 
An Attached Inner Slip with a Lower Layer of Tulle
See picture #s 20 & 21

It has not been worn since it was Dry Cleaned & Has No Issues. 
I removed the Dry Cleaning ticket to take a picture of the label
and did not put it back on

Measurements were taken Flat across while the dress was hanging *
They are slightly approximate -

Length (Top Center of Chest to Bottom) - 41.5 Inches
Corset Length (Top Center of Chest to Pointed Waistline) - 10.5 Inches
Across Chest (Side Seam to Side Seam) - 14 Inches
Across Waist - 12.5 Inches 
Skirt area Length (Waist hem to Bottom Taffeta Hem) - 31 Inches
Across Bottom Hem - 42 Inches / 84 Inches - Bottom Sweep
Back Zip Closure Length - 12.5 Inches

If you have any questions, Please feel free to ask :-)
Thank You for Reading!