White fox Navy open back mini cocktail dress

Open back mini dress from whitefox boutique, bought 2 years ago and never used. Brand new with TAGS Size : Large (petite) Colour : Navy blue Very stretchy Brand new, never used with tags The size is large but it is petite ! I have tried it and I am a small to medium and have a 34 C size for my breast and the dress is just a little bit big for me this is the reason I am selling it, so I would say its a big medium ans the bust a 36 C. I ship in one day :)