In plush sequin-velvet, this plus-size long prom dress is a luxurious choice for your big formal. Whether you're attending prom, a gala, or another black-tie dance, this plus-size long formal dress is sure to shine from the v-neckline to the floor. The elegant long sequin evening gown has bra-friendly shoulder straps that lead to the corset-style lace-up back, while the long a-line skirt has a surprise short underskirt that adds a bold detail that the crowd will love. Surprisingly under $300, this plus-size long prom dress is sure to create beautiful memories without emptying your wallet.