made by the designer brand, Barbara Bui, this is a double layered blue dress in a snakeskin print. The inside is a fitted, stretchy material and the outer layer is chiffon and can be worn two ways as per the first two pictures. Size 40, it fits size 10 and is 33 inches long, 32 inches bust and 30/32 inches waist

Similar dresses cost 100s euros new

https://barbarabui.com/en/collections/robes-jupes?_gl=1*135sh88*_up*MQ..&gclid=CjwKCAjwrvyxBhAbEiwAEg_KguOxbB9v-Q5Oe8y8TFaVdA0wzjA2-5unxRocCO6FTFtxhHK1E9iC8BoCQN4QAvD_BwE