How to Measure Bra Size Correctly?

We've all been standing in front of the mirror, frustrated by straps that dig in, cups that gap, or a band that won't stay put. Finding a perfectly fitting bra can feel like searching for a needle in a haystack, but it doesn’t have to be that way. The truth is, that most women don't know how to measure bra size correctly, leading to daily discomfort that’s entirely avoidable. Measuring your bra size correctly is the first step towards comfort, confidence, and support that works for your body. Let’s break down the process so you can finally say goodbye to those daily bra struggles.

Do You Know Your True Bra Size?

Here are some clear signs that your bra might not be the right size:

• Straps Slipping or Digging In: If your bra straps are constantly slipping off your shoulders or leaving painful marks, it’s a sign that the fit isn’t right.

• Underwire Pinching or Poking: Underwire that digs into your skin or sits uncomfortably on your breast tissue is a clear indication that the bra size is off.

• Gaps or Spillage: If your cups have gaps or your breasts are spilling over the top or sides, your cup size likely needs adjusting.

• Band Riding Up:  A bra band that rides up your back instead of sitting level across suggests that the band size is too big.

• Constant Adjustments: If you find yourself frequently adjusting your bra throughout the day, it’s a sign that it’s not providing the proper support.

How to Measure Your Band Size

Put on a Non-Padded Bra

Previously, You should start by wearing your best-fitting non-padded bra， it will help measure bra size correctly!

Measure Under Your Bust

Afterward, Wrap a soft measuring tape around your ribcage, right under your bust. Make sure the tape is snug and level with the ground. Exhale to get the smallest possible measurement, then round to the nearest whole number.

Calculate Your Band Size

Calculating Your Band Size is the most error-prone step in measuring bra size. If your measurement is even, add 2 inches. If it’s odd, add 3 inches. That means if your under-bust measurement is 33， 36 will be your band size. If your under-bust measurement is 32， 34 will be your band size.

This final number is your band size.

Tip: When you try on a new bra, it should fit comfortably on the last hook, as bands tend to stretch over time.

How to Measure Your Cup Size

Measuring your cup size is simple and can make a big difference in finding the perfect fit. Start by standing straight with your arms relaxed at your sides. Take a soft measuring tape and wrap it gently around the fullest part of your bust, which is usually at the nipple level. Make sure the tape is level and not too tight—just snug enough to get an accurate measurement. Once you have your bust size, subtract your band size from this number to find the over-bust differential. This difference determines your cup size: if it's 0, you’re an AA cup; 1 inch is an A cup; 2 inches is a B cup; 3 inches is a C cup; and 4 inches is a D cup. For those in between, don’t hesitate to opt for a half-cup size for the best fit!

Do you know what is  "Sister Sizes"？

Understanding sister sizes is key to finding a well-fitting bra. Your breast shape and size can be complex, and it’s common for a single cup and band size to not provide Perfect Bra Fitting. For example, a DD cup is equivalent to an E cup, while a DDD cup translates to an F cup; however, the actual cup volume can vary based on band size. Sister sizing helps navigate this by offering alternative sizes that maintain the same cup volume but with different band sizes.

If you find that a 34C fits well in the cups but the band feels too tight, consider trying a 36B instead. And remember, whenever you increase your band size, you should decrease your cup size, and vice versa. This simple adjustment can make a world of difference in comfort and support. So, if your bra cups fit but the band doesn’t reach for a sister size for that ideal fit! You can also check our fitting room to help you find your perfect match.

How to Find Your Bra Size Correctly

Finding your perfect bra size is essential, as breast size can change throughout your life due to factors like pregnancy and weight fluctuations. To ensure you’re wearing the right size, follow these simple steps:

1. Identify Your Breast Shape: Initially， You should recognize what kind of Breast Shape you are， which can impact fit.
2. Assess Fit Issues: Be honest about any common problems you ever meet, like gaping cups or slipping straps, to figure out if you need to adjust your size.
3. Choose Your Cup Type: Different bras cater to various lifestyles and preferences. Whether you prefer a wireless style or a balconette, selecting the right type for your needs is crucial.

Look out for signs of an ill-fitting bra: If your cups are gaping or your band rides up, it may be too big. Conversely, if you experience breast spillage or poking underwires, it might be too small. The ideal fit will have smooth cups, a snug band, and overall comfort. Regularly checking your size ensures you always wear a bra that fits just right!

Bra Sizing FAQs

Regarding how to measure bra size, I believe the following FAQs can definitely help you!

What should I do if my bra rides up in the back?

If your bra rides up, it may be too big in the band. Consider trying a smaller band size for a more secure fit.

Can I wear a wireless bra if I have larger breasts?

Yes, many women with larger breasts find wireless bras comfortable and supportive, especially if they are designed specifically for larger sizes.

How do I know which style of bra to choose for my outfit?

Consider the neckline and fit of your clothing. For low-cut tops, a plunge bra works well, while a T-shirt bra is great for everyday wear under fitted shirts.

Is it necessary to wear a bra all the time?

It’s a personal choice! While some women prefer to wear bras for support, others may choose to go without depending on comfort and lifestyle.

How can I tell if my bra is too old and needs replacing?

Signs that a bra is too old include stretched-out bands, faded fabric, or a lack of support. If your bra is losing its shape, it’s time for a new one.

What materials should I look for in a bra for maximum comfort?

Look for bras made from soft, breathable fabrics like cotton, modal, or a blend of polyester and spandex for comfort and flexibility.

Can I wear the same bra size in different brands?

Not necessarily. Each brand may have slightly different sizing, so it’s important to try on bras or check size charts for the specific brand.

How do I determine if I need a full coverage or a balconette bra?

Full-coverage bras are great for more support and modesty, while balconette bras are ideal for creating lift and shaping for low-cut tops. Choose based on your outfit and comfort preferences.

How often should I measure my bra size?

It’s a good idea to measure your bra size every 6-12 months, or whenever you experience changes in your body such as weight loss, weight gain, or pregnancy.

How do I care for my bras to maintain their shape?

Hand wash bras in cold water, use a mild detergent, and air dry them. Avoid wringing them out or using a dryer, as this can damage the elastic and fabric.

Learn more knowledge of bras: