Vtg 7 GUNNE SAX Jessica McClintock Lace Prom Dress Party Gown Blue/Black DAMAGED

Vintage GUNNE SAX by Jessica McClintock Dress. Full length prom / party dress. Satin-y blue fabric with overlay black lace. Black tulle lining on skirt section. NOTE THERE IS DISCOLORATION around bust, under arm that is purple. 

Strapless. Zipper back. Content label reads "100% Polyester. 100% Acetate. 100% Nylon. Exclusive of trim. Made in USA" Dry clean only. 

Condition: There is color damage along the top, most likely due to someone sweating on it. Around the arm pits and little on the bust area has turned purple instead of blue. I have found a few stray pet hairs on this piece. I've done my best to remove them, but please do not purchase if you have pet allergies. THIS DRESS NEEDS TO BE DRY CLEANED. There is a cut out (on the inside, not visible) near the tag.I'm guessing someone had their name written there and removed? 

Measurments: Labeled a size 7. Please check against all measurements, approx. - Pit to Pit: 16", Waist straight across: 13", total length from pit to hem: 44"