To clean your prom dress, pay close attention to the label and/or instructions that come with your order. Most of the time, prom dresses will need to be dry cleaned. You'll almost never be able to put a fancy dress in the washing machine. Depending on the material, you might be instructed not to dry clean, but just to do spot washes on areas that need some touching up. When it comes to prom dresses, handle with care!