2. Lingerie with plunging neckline: Who doesn’t like little drama in their life? And plunging necklines are oh-so-dramatic! But peaking bra cups can make them look ugly instead of sexy! So, for dresses with plunging neckline, wear a bra that has a deep cut in front. It will not only give a cleavage that will compliment your dress, but it will also secure your from any lingerie related wardrobe malfunctions.