How to choose the right plunge bra
A plunge bra is designed for outfits with lower necklines, making it one of the most versatile styles in your lingerie drawer. If you're wearing a V-neck top, wrap dress, low-cut going-out top or a jumpsuit with a deep neckline, a plunge bra helps create a smooth, invisible look without the centre of the bra showing.
The key feature of a plunge bra is its low centre front, which sits below the neckline of most outfits while still offering the support and shape of an underwired bra. For everyday V-necks and occasionwear, a standard plunge bra is usually the perfect choice. If you're wearing a particularly low-cut dress or top, a deep plunge bra sits even lower for extra neckline coverage.
When shopping online, getting the right fit is just as important as choosing the right style. If you're unsure of your size, you can find your bra size with our online bra fit quiz before selecting your new plunge bra.
Not every neckline is best suited to a plunge style. For square necklines, sweetheart necklines and more open necklines, our balcony bras often provide a more flattering shape and coverage. For backless outfits or extremely low-cut dresses where a traditional bra isn't practical, stick on bras can offer discreet support without visible straps or bands.
Frequently Asked Questions
What is a plunge bra?
A plunge bra features a deep, V-shaped centre between the cups that sits lower on the chest than most other bra styles. This allows it to stay hidden beneath deep V-necklines while still providing the support and shape of an underwired bra. Plunge bras are sometimes referred to as low-cut bras or deep V bras.
What is the difference between a plunge bra and a push up bra?
The main difference is their purpose. A plunge bra is designed with a low centre front that brings the bust together for a closer silhouette while remaining invisible under lower necklines. A push up bra uses angled padding at the base of the cups to lift the bust upwards and create enhanced cleavage. Some styles combine both features, creating a push up plunge bra that offers a low neckline and extra lift.
What can you wear a plunge bra with?
Plunge bras work best with V-neck tops, wrap dresses, low-cut going-out tops and jumpsuits with deep necklines. They are designed to remain hidden beneath lower-cut clothing while providing support and shape. For square necklines or scoop-neck styles, balcony bras or T-shirt bras are often a better choice.
How low does a plunge bra go?
A standard plunge bra sits low enough to remain hidden under most V-necklines. A deep plunge bra sits lower still, making it ideal for very low-cut dresses and occasionwear. For outfits with necklines that fall below the bust line, such as backless dresses or halterneck cut-out styles, stick on bras are usually the most suitable option.
Are plunge bras comfortable for everyday wear?
Yes, many women find plunge bras particularly comfortable because the lower centre front allows the underwire to sit flatter against the sternum rather than pressing upwards. For everyday wear, non-padded plunge bras are a great option if you prefer a lighter feel and more natural shape.
Do plunge bras come in larger sizes?
Yes, Boux Avenue plunge bras are available up to a G cup, making them a supportive and flattering option across a wide range of sizes. If you wear an F-G cup or would like personalised fitting advice, our in-store bra fitting service can help you find the most comfortable and supportive fit.