I'm no longer in the bodycon game but this is a really great dress by JustCavalli. The fabric is thick enough that it's pretty forgiving. 3/4 length sleeves and a V-ish neck with back zip. In-new condition.
Made in Italy, 84% viscose / 11% polyamide / 5% elastane.
Item measurements (note this dress is bodycon so there's a decent amount of stretch)
Pit-to-pit: 14.5"
Waist: 11.5"
Hip: 14.5"
Length: 35"
Sleeve: 17"