Every girl must have at least one little black dress in her closet. It’s a fact. This item has become a fashion icon and has remained a solid wardrobe staple through the decades. Who can forget Princess Diana's famous revenge dress or Audrey Hepburn in Breakfast at Tiffany's? The little black dress can create a powerful message, turn you into a style icon, or ensure you're the most well-dressed person wherever you go, at the very least.