A plunge neckline creates visual drama and draws attention to the center of the body which is why it works so well for occasion dressing. The neckline detail becomes the focal point so the rest of the dress can be relatively simple in construction. You need the right undergarments to wear a plunge dress comfortably and that is worth planning for in advance. The neckline works best when the rest of the dress has some structure so your silhouette stays polished throughout the evening. A plunge neckline dress reads as intentionally sexy rather than accidentally revealing which matters for how the wearer feels in it. These are the going out dresses that make a statement through one strategic design choice.