Sweetly sensual, this plus-size long prom dress flatters the figure with feminine details. In gleaming fabric from the sweetheart neckline to the floor, this plus-size evening gown has adorable shoulder bows that adjust for the best fit. Ruching offers a fitted look on this plus-size long formal dress, while the hip-skimming long skirt opens in a side slit to complete the look. Priced under $150, this plus-size long prom dress is an upscale style that won't cost a fortune.