Shop Simply Dresses for the hottest styles of the season for prom or party from Riva Designs. We have a fabulous selection of cocktail dresses, prom dresses, short party dresses and evening gowns from Riva Designs for your special night. Riva Designs is renowned for formal and semi-formal dresses with beautiful beading in vibrant colors and unique prints. Whether you choose a chic short prom dress or a sleek long evening gown, Simply Dresses can help to create your unique look for prom or special occasion party.