In soft light periwinkle, wearing this long lace prom dress 32424 from La Femme is like slipping into a glorious statement piece. Crafted in delicate floral lace from the sweetheart neckline to the hem, this long periwinkle formal dress offers a classic look for prom, galas, and other black-tie events. The sheer corset-style waist and strappy open back add a sexy vibe to this long lace sweetheart designer dress, while the sleek long skirt spills into a small train that kicks up the drama and completes the look. Offered in misses and some plus sizes, this long lace periwinkle prom dress is an old Hollywood style with lots of modern details.