Amsale midnight blue silk gown /bride made/ prom

Beautiful Amsale silk dress in Midnight blue color Bought it in Neiman Markus NYC. Wore it only once and dry-cleaned+stored. The size is listed 6 but it runs small and it doesn’t stretch. So I would say it would fit bit loosely for the regular size 2 and normal fit for the regular size 4. Bust size would fit up to about 34C.