If you're looking for a simple strapless long prom dress that lets your beauty shine through, this one T612 from Amoris is the one. This strapless long formal dress has clean lines from the curved corset-style bodice to the hem for a classic look at prom, galas, and other black-tie events. In misses and some plus sizes, this strapless long formal dress has a floor-length skirt that gathers at the waist before flowing to the hem in a figure-flattering a-line shape. Priced under $150, this classy strapless long a-line prom dress is sure to leave an indelible mark on hearts and memories.