Vintage 60’s mod halter dress

Handmade vintage fabric halter dress, zipper back, vibrant 60’s floral print fits like a small xs, double lining on the bust, inside stitching has threads due to finish being raw edge, very comfrotable done by hand, no holes no stains, my grandmother made it for my mother in the 60’s one of a kind well fitted retro dress 14.5 inches across the bust from the bottom of the armpit. Smallest part of the true waist is 13.5 across the front, having a hard time parting with it but it does not fit