How to Choose the Right Bra Size: A Step-by-Step Guide

Quick Answer

To find your correct bra size, measure your band (underbust) and bust (fullest part) in inches, then calculate your band size (round up to even number) and cup size (difference between bust and band). Use our step-by-step guide to ensure accuracy and comfort.

Finding the right bra size can feel like a mystery, but it doesn't have to be. Many women wear the wrong size without realizing it, leading to discomfort, poor support, and even health issues. This guide will walk you through a simple, accurate process to measure your bra size at home, so you can shop with confidence and enjoy all-day comfort.

Whether you're buying your first bra or updating your lingerie drawer, understanding your measurements is the first step. Our method uses just a soft measuring tape and takes about five minutes. We'll also highlight common mistakes to avoid, so you get it right the first time.

Why Bra Size Matters

Wearing the correct bra size is about more than just appearance. A well-fitted bra provides essential support, reduces strain on your back and shoulders, and allows you to move freely without constant readjustment. On the other hand, an ill-fitting bra can cause chafing, red marks, and even headaches.

Your body changes over time due to weight fluctuations, hormonal shifts, and aging. That's why it's smart to re-measure at least once a year or whenever you notice discomfort. Many women are surprised to learn that their size has changed, even if their weight hasn't.

Investing in quality bras that fit well is a game-changer. Brands like Naturana focus on comfort and support, offering a range of styles from wire-free to side smoother options. When you know your size, you can choose the perfect bra for every outfit and activity.

• Re-measure annually or after significant weight changes.
• Different bra styles may fit differently; always try on or check size guides.

Tools You'll Need

To measure your bra size accurately, you'll need a soft, flexible measuring tape (like those used for sewing). If you don't have one, you can use a piece of string and a ruler, but a soft tape is easiest. Wear a non-padded bra or no bra at all for the most accurate bust measurement.

It's also helpful to have a mirror and a pen and paper to record your measurements. Stand in front of a mirror so you can ensure the tape is level and not twisted. Having a friend help can improve accuracy, but it's possible to do it alone.

• A soft measuring tape is essential.
• Measure on bare skin or with a non-padded bra.

Step-by-Step Measuring Process

Now, let's dive into the actual measuring process. Follow these steps carefully for the most accurate results. Remember to keep the tape snug but not tight, and ensure it's parallel to the floor.

First, measure your band size. Wrap the tape around your ribcage, just under your bust. Keep it horizontal and snug. Take the measurement in inches. If it's an odd number, round up to the nearest even number. This is your band size. For example, if you measure 31 inches, your band size is 32.

Next, measure your bust size. Wrap the tape around the fullest part of your bust, keeping it level and not too tight. Note this measurement in inches. The difference between your bust and band measurements determines your cup size. For example, a 1-inch difference is an A cup, 2 inches is a B cup, 3 inches is a C cup, and so on.

Finally, combine the two numbers to get your bra size. For instance, if your band is 34 and your bust is 37, the difference is 3 inches, which is a C cup. Your size is 34C. Remember, sizes can vary between brands, so always check the specific brand's size chart.

• Round band measurement to nearest even number.
• Cup size = bust measurement - band measurement.

Common Mistakes to Avoid

Even with the right measurements, many women make common mistakes that lead to a poor fit. One of the biggest is wearing the band too loose. The band provides about 80% of the support, so it should be snug and level. You should be able to fit two fingers under the band, but not much more.

Another mistake is ignoring the center gore (the part between the cups). It should lie flat against your sternum. If it doesn't, the cups are too small or the band is too loose. Also, straps that dig into your shoulders indicate that the band is too loose, causing the straps to do all the work.

Finally, don't assume your size is the same across all brands. Different styles and materials can affect the fit. For instance, a wire-free bra might fit differently than a wired one. Always try on new bras or consult the brand's size guide before purchasing.

• The band should be snug and level, not riding up.
• Center gore should lie flat against your chest.

Your Bra Size Checklist

1. Measure Your Band: Wrap the tape snugly under your bust, ensuring it's level. Round to the nearest even number for your band size. Checkpoint: The tape should be snug but not digging in.
2. Measure Your Bust: Wrap the tape around the fullest part of your bust, keeping it horizontal and not too tight. Checkpoint: The tape should not compress your bust.
3. Calculate Your Cup Size: Subtract your band size from your bust measurement. Each inch difference equals one cup size (1=A, 2=B, etc.). Checkpoint: If the difference is odd, round up to the next cup size.
4. Try On or Check Size Chart: Use your calculated size as a starting point. Try on bras or consult the brand's size chart, as sizes vary. Checkpoint: Ensure the center gore lies flat and the band stays level.

Products That Fit Your New Size

• Softer Wohlfühl-BH mit Mesh-Details: Wohlfühlen war noch nie einfacher! Der Soft-BH kommt ohne Bügel und Schale aus und gibt dir somit ein leichtes Tragegefühl. Die Cups sind vorgeformt und bringen deine Kurven super in Form. Noch mehr Komfort bringt das innovative 360° Stretch Material. Es macht diesen BH besonders anschmiegsam, bietet dir optimale Bewegungsfreiheit und perfekten Sitz. Der Rücken ist zusätzliche ohne Nähte verarbeitet. This wire-free bra is perfect for everyday comfort, and the 360° stretch material adapts to your unique shape, making it forgiving if you're between sizes.
• Bügelloser BH mit Schale und Glanzband: Dieser Wohlfühl-BH überzeugt mit seiner super soften Schale und den breiten, gepolsterten Entlastungsträgern. Die Träger verhindern ein Einschneiden und machen den BH ultra bequem. Der BH aus der "Wednesday" Kollektion kommt ohne Bügel daher und ist dein idealer Begleiter den ganzen Tag. Die glatte Schale und das schlichte Design machen diesen Soft-BH zudem zum idealen T-Shirt BH. If you prefer a smooth look under t-shirts, this bra's soft cups and wide straps provide comfort and a seamless silhouette, ideal for your new size.
• Soft-BH mit Side Smoother Effekt und Spitze Set - Pink Rose: Ein BH, der alles kann? Oh yes! Der Side Smoother x Friday Lace ist dein neuer Everyday-Hero – mit Side Smoother Effekt. Er vereint die bequemen Trageeigenschaften unseres Side Smoothers mit der wunderschönen, recycelten Spitze unserer Friday-Serie – et voilà, bügelloser Komfort mit einem Hauch Spitze für das gewisse Extra. Die hohen Seitenteile – unsere Smoothing Wings – verstecken kleine Pölsterchen. For extra smoothing and a touch of elegance, this bra's side wings help conceal bulges, giving you a sleek look under fitted clothing.

Now that you know how to measure your bra size correctly, you can shop with confidence. Remember to re-measure regularly and consider trying different styles to find what feels best. With the right fit, you'll enjoy all-day comfort and support.