Size 6 Mermaid Style Prom Dress

Still in excellent condition, worn one time. Purchased from Grad Central in Victoria, BC. I am unsure of the brand. For reference, I am 5’4 & the size 6 dress was altered to fit more of a size 4. Bra size fit is about 32D, and waist about 25. It has beautiful detail, & a clasp on the back to shorten the back of it for easier movement. There are some minor marks at the bottom, but they are hidden in the folds of the dress on the back. It also hasn’t been dry cleaned and the stains appear to just be on the surface.