Women's 40A Bras

Stop settling for uncomfortable bras that only look good on the rack. Find the best 40A bras that enhance your shape comfortably.

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Shop 40A Bras

Having smaller busts doesn't mean you need to settle for uncomfortable bras that only look good on the rack. You want them to look and feel good on your body. We get it. You don’t want an overfilled bra with tons of bulk. You want one that holds your boobs just right and lifts them naturally without digging in or straps that slip. The best 40A bras will not only be extremely comfortable but fit you perfectly to stop gaping cups while enhancing the beauty of your natural shape.

40A Bra Styles at ThirdLove

You’ll want to make sure you have the right 40A bra for every occasion. Why settle for less when you can find the perfect fit at ThirdLove?? Plunge bras, sports bras, wireless bras, unlined bras, strapless bras, and bralettes - you’ll find exactly what you need.

How Should a 40A Bra Style Fit?

There’s one general rule that applies to all bras, and bra size 40A is no different - if it feels good and looks good, then it fits! Make sure that you can barely feel the underwire of your bra and that it doesn’t poke into the skin. The straps should sit comfortably on your shoulders without digging in or sliding down. Perfect-fitting cups will feel smooth and supportive with no gaping. All in all, the bra should be hugging you in all the right places without feeling too tight.

Finding the Best 40A Bra

Our collection of 40A bras features a great variety of styles that will comfortably enhance your shape. Our 24/7® Classic T-Shirt Bra is a fan favorite that stays completely invisible under your clothes while smoothing out your shape. If you're looking for something more lightweight and airy, the 24/7® Second Skin Unlined Bra is a great option that will highlight your natural silhouette. For our take on the push-up bra, try our 24/7® Classic Uplift Plunge Bra. For those special occasion moments, opt for our 24/7® Classic Strapless Bra that features a perfect grip, flexible underwire, and great-fitting cups.

Finding your perfect bra size can be difficult. That's why we created our Online Fitting Room Quiz! No need to give in to bad bras or confuse yourself with sister sizes. Take our quick quiz to find the band and cup size that will best fit your body in minutes. We'll also give you plenty of suggestions based on the styles you love so it's easy to shop for your next favorite bra. Take our Fitting Room Quiz to find your perfect fitting bra and say goodbye to gaping cups for good.

Explore all A cup sizes: 32A, 34A, 34A1/2, 36A, 36A1/2, 38A, 38A1/2, 40A, 40A1/2