Here's a fancy cold-shoulder long ruched prom dress that is polished posh. With beaded trim at the sweetheart neckline, this elegant long evening gown has thin shoulder straps and wide banded sleeves that drape over the upper arms. This gorgeous cold-shoulder long formal dress has criss-cross ruching at the waist that offers a figure-flattering look for prom, galas, and other black-tie events. A corset detail laces up over the open back for the best fit, while the long skirt opens in a side slit to complete the look of this long ruched prom dress that is surprisingly affordable, at under $150.