When most girls think of their prefect prom dress, they envision a long flowing gown. Stun your date and your friends at your 2017 prom with one of our gorgeous long prom dresses. Go classic with a one piece prom dress or get more contemporary with a two piece. At JCPenney, you have your pick of amazing styles. Shop sleeveless prom dresses or strapless prom dresses. Beads, lace or plain choose from a dresses with an amazing selection of embellishments.