Plus-Size Long Corset Prom Dress: Poly USA W1242Sparkle under the lights in this plus size long prom dress by Poly USA. With a sparkly sweetheart corset that wraps around to the lace up back, this plus size long formal dress is fully adjustable for prom, galas, and other black tie events. The plus size long special occasion dress has a long skirt with tummy camouflaging ruching, a thigh high side slit, and a small train that provides the glamour. Catch the light with movement when you choose this