Strappy-Back Long Prom Dress: Dancing Queen 4396Simply beautiful, this strappy open back long prom dress 4396 is the epitome of contemporary elegance. With a sheer embroidered sweetheart bodice, this floor length evening gown has supportive shoulder straps that create a statement as they criss cross the open back. In misses and some plus sizes, this long sweetheart formal dress has a hip skimming long skirt that opens in a side slit for a flirty look at prom, galas, and other black tie events.