Strappy-Back Long Sequin Prom DressAbsolutely dazzling, this long sequin prom dress is cool in the front and hot in back. So beautiful, this long formal dress is fully sequined from the deep v neckline to the floor, while thin shoulder straps criss cross the open back for a flirty look with every turn. The open back evening gown is fully lined with a sequined sheer overlay that hugs the curves before flowing to a dramatic floor length. Surprisingly affordable, at under $200, this long