Cup sizes explained: How bra sizes work

Finding the right bra size can sometimes be tricky. Cup sizes can be confusing, making it unclear exactly what size you need. At Esterella, we're here to make things easier. We're happy to explain how bra sizes work, so you can better understand which size you need. lingerie suits you best. With the right information, you can more easily choose a bra that fits perfectly and provides comfort and good support.

What is a cup size?

A cup size indicates how much room the bra cups offer for your bust and is an important component of your bra size. A bra size consists of two parts: a band size (such as 75 or 85) and a cup size (such as D or E).

Cup size is calculated by measuring the difference between your bust (measured across the fullest part of your bust) and your band size (the circumference directly under your bust). The greater the difference, the larger the cup size. The difference between D and E cup sizes is usually one inch (approximately 2.54 cm). This means that with the same band size, the cup of an E bra is one inch deeper and wider than that of a D bra, providing extra room for your bust. A well-fitting cup size is crucial for comfort and support.

What cup sizes are there?

Cup sizes range from small to large and are indicated by letters like A, B, C, D, E, and so on. The further the letter goes in the alphabet, the larger the cup. For larger cup sizes, such as an E cup or higher, it's important that the bra offers the right support. In the Netherlands, most stores and brands typically go up to cup size E or F. At Esterella, however, we have a wider selection and offer lingerie up to cup size J. This ensures that women with different busts and cup sizes can always find a bra that fits perfectly and is comfortable. By choosing the right combination of cup and band size, you'll find lingerie with the ideal fit.

Below you will find an overview of our cup sizes in order:

What is a large cup size?

A large cup size refers to a bra cup designed for a larger bust. This means the cups offer more space to fully enclose and support the breast. A large cup size often starts at an E cup and goes up to, for example, a J cup, depending on the brand or store. Wearing the correct size is especially important with large cup sizes.

A well-fitting bra prevents discomfort such as pinching straps or insufficient support. Moreover, the right size ensures even distribution of breast weight, which helps prevent back and shoulder pain. By choosing a bra that perfectly matches your bust size and needs, you'll experience optimal comfort and a beautiful fit.

Different types of bras for different cup sizes

Every woman is unique, and so are her bra preferences. Your bra size plays a major role in finding the right fit—whether you're looking for extra support, a natural look, or a dramatic cleavage. Fortunately, there's a perfect style for every woman and every bra size.

  • Balconette : A bra with wide, low cups that creates a beautiful décolleté. Ideal for wearing under clothes with a lower neckline.

  • Triangle : A lightweight bra without extra padding with a soft, natural fit. Perfect for smaller cup sizes, as it emphasizes the natural shape of the breast. Women with larger cup sizes can also wear a triangle bra, especially if it's designed with wider straps for more support.

  • Push-up : This bra lifts the bust and creates a fuller appearance. It's especially popular with women who want to accentuate their décolletage.

  • Minimizer : Specially designed for larger cup sizes, this bra distributes the volume of the breasts, making them appear smaller and clothes drape more beautifully.

  • Underwire : A classic bra with built-in underwires that support the breasts and ensure a secure fit. Suitable for almost all cup sizes.

  • Underwire : This bra offers comfort without the pressure of an underwire. A great choice for women who appreciate a soft and relaxed fit.

Calculate the perfect bra size

Finding the perfect bra size starts with measuring your bust and band size. These measurements together determine the perfect cup size and ensure your bra fits comfortably and provides optimal support. To calculate your size, first measure tightly around your chest, just under your breasts. This is your band size. Then, measure the fullest part of your breasts to determine your bust size. The difference between these two measurements, expressed in centimeters, determines your cup size.

There are different sizes because the sizing system can vary by country. European sizes are often used in the Netherlands and surrounding countries, while English sizes are common in the United Kingdom and the United States. These systems use different ratios between band size and cup size, which can be confusing.

A size chart helps you find the correct ratio between bust and band size within the correct system. The table below makes it easy to determine your ideal bra size, ensuring a secure fit and a flattering silhouette.

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Choosing a cup size: How do I know what's right?

Finding the right cup size is essential for comfort and support. Want to buy a larger cup size or just want to be sure you're choosing the right size? Use these five tips to determine your perfect bra size:

  1. Measure your bust accurately: Use a measuring tape to measure your bust and underbust circumference in centimeters. Measure tightly (but not too tightly) and make sure the tape runs straight across your back. Use a size chart to determine the correct cup size and circumference based on these measurements.

  2. Note the ratio between bust and underbust: The cup size is calculated by the difference between these two measurements. The greater the difference, the larger the cup size. The size chart shows which cup size corresponds to which exact ratio.

  3. Try different cup sizes: Brands often have slightly different fits. What seems like the right cup size for one brand might not work for another. Try bras from multiple brands to find your perfect fit.

  4. Unsure? Choose a larger cup size: If you're unsure between two sizes, it's often better to choose a larger cup size. A cup that's too small can pinch and not fit properly, while a slightly larger size usually offers better comfort and support.