Prom or event Dress Portia and Scarlet black with train

Portia and Scarlet May model, worn one evening only, black satin with train. Size M corresponds to size 6. Purchased at Madeline boutique in Toronto. Straps are adjusted to cross on the back for better fit . Original price with tax was $550. Comes in a protective cover. video https://vimeo.com/367020485?embedded=true&source=vimeo_logo&owner=104073085