Vintage Betsy Johnson backless dress from Vegas

This is gorgeous vintage dress is absolutely adorable. Made up the softest materials it is a kind of patch work dress with different patterns but all black and extremely classy looking. It is just past the knees, with a very low decolletage, and ties around the neck leaving the back open down to about just above the hip. Bought this dress in Vegas when I was just 18 and it was my first Betsey Johnson piece and I fell in love. It is in mint condition with no signs of wear. Only worn about 5 times