Some girls order their prom dress and accessories fully online. Others use the Internet for research, narrowing down styles and price ranges online before venturing out to brick and mortar stores. However you utilize it, the Internet is a powerful shopping resource. Try to research a variety of dress styles and colors online, and then use the Internet to determine which shops sell the prom dresses in which you are most interested. Online prom dresses are mostly cheaper than prom dresses in shops.