Keyhole Notched Neckline Little Black Dress. Backless homecoming dress with a notched neckline. The sheath dress in elastic silk like satin is fashioned with delicate keyhole. A natural waist is echoed at a backless design. Fit for cocktail party and homecoming party. Buy this Dress and you can Save 16% OFF on Keyhole Notched Neckline Little Black Dress Bodycon Dress@FancyLadies.