Christian Dior vintage nightgown long 3/4 sleeve lace trim blue size medium

Christian Dior vintage nightgown long length lace trim blue size medium 3/4 sleeve, blue is a minty blue , cotton material ( some wash wear or piling , see pic ) Flat lay measurements 45" length, 20" pit ( medium per google search, no size or material tags ) no smoking , preloved vintage item #night gown, nightgown, pajama, chemise, slip, vintage retro, sleep wear