Sexy mermaid dress in lace, tulle and guipure with sweetheart neckline. Bodice with sheer illusion tulle overlay decorated with lace and guipure appliqués. Nude underlay. Skirt with tulle ruffles decorated with lace appliqués. The Knot provides price estimates to give you a general idea of the cost of a dress. Please visit retailers in your area for exact pricing. Prices will vary by region.