Vintage 70s hippy Prom Formal Dress Soft Pink bustle option on/off shoulder sz7?

Vintage 70s hippy Prom Formal Dress Soft Pink bustle option on/off shoulder sz7 ? Ribbon belt. pics make it look kind of purple-ish, its not. All measurements are approx: Length down the side, under the arm is 4 ft 1/2" Zipper down the back is 16" long The "waist" seem is about 27" Around the bust is 33" Straps are about 10.5" long Across the shoulders, the top of the back, its about 10" strap to strap. There is an "eyelet" hook on the bottom back, so you can "bustle" the back if you want. In the pics, i have it bustled on the side. I couldn't find a loop to hook too so i was using the ribbon belt loop. Any questions please ask! ITS NICE! the only issue i could find, one of the straps is pinned on with a small bobby pin. Look at pics closely please!