the strapless or sweetheart
Most gowns with sweetheart or strapless necklines usually have cups sewn into them. A strapless bra lifts your girlfriends higher and lends extra support. Instead of cups, ask your seamstress or bridal salon if it is possible to sew the bra into your dress.
Tanga strapless lace bra, $169, and lace briefs, $89, SIMONE PERELE. Crystal-embellished lace and tulle ballgown, price upon enquiry, SILHOUETTE THE ATELIER.