NO SIZE TAG Vintage Gilligan & O'Malley Floral Flower Nightgown House Dress

NO SIZE TAG Vintage Gilligan & O'Malley Floral Flower Nightgown House Dress Pre-owned condition. Has some staining. No size tag, I think it might be around a Women's Medium or Large but I am not sure so see all my pictures for exact condition and pictures with measurements shown. Does not come from a pet-free home, I have cats. Feel free to send me an offer on this!