One of the things you can put together on your simple black dress is a simple red belt with matching red pumps, by just adding a red belt, no one will find out that it was just the same Wild Party Dresses you wore last year. If you are applying for a job and not sure what to wear, you can use your black dress and just put on a coat or blazer over it to make it look a little formal. You can also buy shawls in different colors to match your black dress. If you love to accessorize yourself, find an oversized necklace, it will look like your necklace is just part of your dress.
See, all you need is one dress for different kinds of occasions. Women can also use as prom dresses or pageant dresses. Now, who said finding a cheap party dress is hard?