A sweetheart dress is a type of dress with a neckline that resembles the shape of a heart. It is usually considered feminine and can be a flattering choice for many body types. Full definition
This tulle sweetheart dress features sweetheart neckline and tiered tulle layers. (weddingdresstrend.com)
Style R3408 «Bella» strapless sweetheart dress with boned corset bodice, beaded lace appliqués, tiered tulle skirt, and removable underskirt that reveals a short reception dress, by Randy Fenoli for Kleinfeld (brides.com)
Style R3409 «Layla» strapless sweetheart dress with a pearl - colored boned bodice and draped trumpet skirt by Randy Fenoli for Kleinfeld (brides.com)