If you’ve ever found yourself confused in the lingerie aisle, you’re not alone. Bra sizing can feel like a mystery, especially when it comes to cup sizes. So let’s answer the big question: Which cup size is bigger—B, C, or D? The answer is simple in theory: D is larger than C, and C is larger than B. But in practice, bra sizing depends on more than just the letter. Band size, cup volume, and overall fit all come into play, which is why understanding your measurements is so important.
Cup size increases as you move from B to C to D, but the same cup size on different band sizes can vary in volume. That’s where professional sizing tools and fit-focused brands like ThirdLove come in to take the guesswork out of it.
Easy Sizing With ThirdLove’s Bra Chart
The most effective way to find your ideal fit is to start with an accurate size. ThirdLove offers a comprehensive bra size chart that helps you determine your measurements from home. With easy-to-follow instructions, it guides you through measuring both your band and bust to find your true size.
Not only does this prevent the discomfort of an ill-fitting bra, but it also ensures better support, lift, and comfort—especially if you’re transitioning between sizes like B, C, or D. ThirdLove’s sizing tool even accounts for half-cup sizes, offering a more personalized fit than many traditional brands.
Fit Matters: From Strapless to Cooling Bras
Once you know your size, the next step is finding the right bra style for your needs. Whether you’re dressing for a formal event or managing hot flashes, the fit and function of your bra can completely change your day.
Need a discreet option for an off-the-shoulder top or dress? ThirdLove’s strapless bras are designed to stay in place without sacrificing comfort or support. They come in a range of sizes—including half cups—so you don’t have to compromise style for fit.
If you’re looking for more comfort in your daily wear, especially during hormonal changes or warmer weather, cooling bras for menopause are a must. These bras use thermoregulating fabric to wick away moisture and keep you cool all day, helping manage body temperature shifts that can come with menopause or heat sensitivity.
Cup sizes can be confusing, but the right tools and the right brand make all the difference. Whether you’re figuring out if B, C, or D is your best fit, browsing strapless bras for a night out, or seeking cooling bras for menopause, ThirdLove offers styles and sizes to support every body. Start with their easy bra size chart, and you’ll never have to guess your size—or settle for the wrong fit—again.
