I'm the second owner of the corset and I've only tried it on. 

The corset can be tied on the sides, so it can fit different sizes. It's worn like a neckholder top. I would recommend it for smaller bust (flat and completely closed around 70 cm, probably up to 90 cm) and waist sizes (flat and completely closed around 60 cm, probably up to 85 cm) There is a zipper on the back, so you can put it on easily. 

It's a little wrinkled at the front, but you can surely steam it.