Browse our large selection of evening dresses, and find the perfect Full Length long prom dresses for your prom. At eDressit you will find many off the shoulder prom dresses and long prom gowns from the top evening dress designers. A long dress makes an elegant statement at any formal event whether it is a prom, formal dance, or wedding. View the variety of Full Length 2020 long prom dresses to find your perfect look today.