Vintage 50's Blue Prom Dress

Vintage long formal dress, looks handmade. Dark blue velvet on top, baby blue satin ribbon at waist and long bow, poly blend on bottom (lined). Back dips and slit on skirt. One area with light mark on back, haven't tried to remove. Gorgeous. Approximate measurements: 51.5" long, 15" underarm to underarm, 13" waist, 17.5" hip area, 10" slit at back.