What is the purpose of a plunge bra?

A plunge bra is designed to create a low, revealing neckline by placing the bust closer together. It is ideal for wearing with low-cut tops and dresses. The cups of a plunge bra are typically designed to be lower-cut than those of a traditional bra, and they may also have additional features such as underwires or padding to help support the bust. Plunge bras are available in a variety of styles, including those with lace or other decorative details.