Ball gown with a corset. Super confortable! I'm size 8, but the way the corset is constructed makes it suitable to smaller sizes as well, however IMHO it looks better for size 8, as you can see the corset back more. The skirt part is reinorced, the underskirt is adjusted to the smallest cirumference on the pictures, but it can be made wider or worn withouth the underskirt all together.
Dress was purchased from a small wedding boutique in Europe in 2014, worn in 2014. Was professionally cleaned and preserved in MuseumCare box ever since - looks completely white and ready to wear. The veil is also preserved with the dress.