Here's a gorgeous off-the-shoulder long sequin prom dress that is sure to be the envy of every red carpet. With a fit-and-flare silhouette, this long evening gown is fully sequined from the fold-over neckline to the floor for a sparkly look at prom, weddings, and fancy galas. In misses and plus sizes, this long sequin formal dress has long sleeves that offer a classic look, while the long figure-flattering a-line skirt has tummy-camouflaging pleats at the waist. As shape-enhancing as it is affordable, this off-the-shoulder long sequin prom dress, under $150, is an old Hollywood style that won't break the bank.