VTG Christian Dior Long Nightgown XL Lace Trim Button Neck Polka Dot Print Lux

VTG Christian Dior Long Nightgown XL Lace Trim Button Neck Polka Dot Print ~ Ivory Printed Lace over shoulder strap with tiny rosette/ribbon 3 button lace neck with keyhole round hem with lace trim Gorgeous! The fabric content is missing/feels synthetic poly nylon? Also size tag is missing/see measurements below Bust: 44” Length: under arm to hem: 45”