Here's a plus-size long prom dress that is sure to set the tone for a glamorous evening. With a stylish matching shawl that is completely removable, this strapless plus-size long formal dress offers two glamorous looks in one for prom, military balls, and other black-tie events. The plus-size long evening gown has tummy-camouflating ruching at the top of the hip-hugging skirt, while a side slit provides a sexy vibe. With or without the matching shawl, this plus-size long prom dress is a simply beautiful choice that is surprisingly affordable, at under $150.