In deep emerald green, this beautiful long mermaid prom dress is for the girl who loves butterflies. With a sparkly butterfly print from the plunging v-neckline to the knees, this elegant long formal dress ins an eye-catching choice for prom, galas, and other black-tie events. The butterfly-print evening gown has thin shoulder straps that lead to the corset-style back that laces up for the best fit, while the hip-skimming long skirt has a sparkly sheer-tulle overlay that juts away from the knees to the floor. Richly designed for the girl who loves butterflies, this emerald green long mermaid prom dress combines jaw-dropping style with fun details.