This is an illustration of a plunge bra on a woman.[1]
A plunge bra is a type of bra that allows for lower-cut cups and increased cleavage. They are designed with angled cups and an open and lowered center gore, with the shoulder straps usually set widely apart. These bras are suitable for wear under a dress or shirt with a plunging neckline.[2] Unlike push-up bras, plunge bras are not generally as heavily padded.[3][4]