Purple reigns at prom this year. Combine this hot plum purple color with a trendy one shoulder design for a winning look for prom 2013. A one shoulder long evening dress with an asymmetrical neckline, empire waist and glittering jewel accents at the one shoulder. A floor length purple prom gown with fully pleated skirt and a figure flattering look that will twirl beautifully as you move about the dance floor.