Lace Up Long Sweetheart Prom Dress: Faviana 11415 Cooling System 2023 Hyundai Ioniq 5. Step into the night in this long sweetheart prom dress 11415 by Faviana and get ready to shine. With a beaded sweetheart corset that wraps around to the lace up open back, this long designer dress is as figure flattering as it is sparkly. The elegant long formal dress has an asymmetrical waist that tops the wrap style skirt that opens in a side slit before ending in a small train. Combining intriguing details and a flattering silhouette, this long sweetheart prom dress is one that no one will soon forget.