How to Find Your Correct Bra Size in Bangladesh (With Size Chart)

Most women in Bangladesh are wearing the wrong bra size. This is not an exaggeration — research consistently shows that close to 80% of women are in a size that does not fit correctly, and the problem is even more pronounced in countries like Bangladesh where professional bra fitting services are rarely available, local stores carry limited size ranges, and sizing guidance is almost never provided at the point of purchase.

The consequences of a poorly fitting bra are real and accumulate every single day. A band that is too loose means your straps bear all the weight of the bra, digging into your shoulders and causing pain by afternoon. A cup that is too small causes spillage, discomfort, and visible problems under clothing. A cup that is too large means no support at all. And because most women simply accept this discomfort as normal — having never worn a correctly fitting bra — they do not realise that it can be fixed by simply knowing their actual size.

This guide shows you exactly how to measure yourself at home and find your correct bra size with no professional help required. It takes about five minutes with a measuring tape. Once you know your size, shopping online becomes far more accurate and satisfying — including when you browse the lingerie sets at AliPeak or explore the full range of women's clothing at AliPeak.

What You Need Before You Start

You need only one tool: a soft fabric measuring tape. This is the flat, flexible tape used by tailors for stitching clothes. It is available at any tailoring shop, fabric store, or stationery shop in Bangladesh for 10 to 20 BDT. Do not use a stiff ruler or a metal measuring tape — these cannot wrap around your body correctly and will give inaccurate readings.

Measure in front of a mirror if possible. Stand straight with your arms relaxed at your sides. Do not hunch your shoulders forward or pull your chest in — stand naturally.

For the most accurate results, measure while wearing a well-fitted non-padded bra, or no bra at all. A heavily padded bra will add artificial volume to your bust measurement and give you an inaccurate cup size reading.

Take each measurement twice and use the average if the two readings differ slightly.

Step One: Measure Your Band Size (Underbust)

Wrap the measuring tape around your ribcage, directly underneath your bust. The tape should sit in the groove just below your breast tissue — not on the breast itself and not lower down on your stomach.

Keep the tape level all the way around your body. It should be snug against your skin but not pulled tight. You should be able to slide two fingers under the tape comfortably. If you are pulling the tape tight, loosen it slightly — a too-tight band measurement leads to a band size that is uncomfortably small.

Read the measurement in inches. Round to the nearest whole number.

Now apply this simple rule:

If your underbust measurement is an even number, that number is your band size. If your underbust measurement is an odd number, add one to get an even number — that is your band size.

Examples:

1. Underbust 28 inches → Band size 28
2. Underbust 29 inches → Band size 30
3. Underbust 30 inches → Band size 30
4. Underbust 31 inches → Band size 32
5. Underbust 32 inches → Band size 32
6. Underbust 33 inches → Band size 34
7. Underbust 34 inches → Band size 34
8. Underbust 35 inches → Band size 36
9. Underbust 36 inches → Band size 36
10. Underbust 37 inches → Band size 38
11. Underbust 38 inches → Band size 38

Common band sizes available in Bangladesh range from 28 to 44, though not all sizes are stocked by all sellers. The most commonly available sizes are 32, 34, 36, and 38.

Step Two: Measure Your Bust Size (Overbust)

Wrap the measuring tape around the fullest part of your bust. This is usually across the nipple line. Keep the tape parallel to the floor — it should not dip lower at the back.

The tape should be close to the body but not compressed against it. You want to capture the natural fullness of your bust, not a flattened measurement. If you find the tape sliding down at the back, hold it in place with one finger while you read the front measurement.

Read this measurement in inches and round to the nearest whole number. This is your bust measurement.

Step Three: Calculate Your Cup Size

Subtract your band size (from Step One) from your bust measurement (from Step Two).

Cup Size Chart:

Less than 1 inch difference → AA cup 1 inch difference → A cup 2 inches difference → B cup 3 inches difference → C cup 4 inches difference → D cup 5 inches difference → DD cup (also written as E in some sizing systems) 6 inches difference → DDD cup (also written as F) 7 inches difference → G cup 8 inches difference → H cup

Your bra size is your band number followed by your cup letter.

Example one: Underbust 33 inches (rounds to band size 34). Bust 36 inches. Difference is 2 inches. Size is 34B.

Example two: Underbust 35 inches (rounds to band size 36). Bust 40 inches. Difference is 4 inches. Size is 36D.

Example three: Underbust 30 inches (rounds to band size 30). Bust 33 inches. Difference is 3 inches. Size is 30C.

Full Bra Size Chart for Bangladesh

Use this chart to look up your size directly once you have your band and bust measurements.

Band size 28:

1. 28AA: underbust ~27-28, bust ~27-28
2. 28A: underbust ~27-28, bust ~29
3. 28B: underbust ~27-28, bust ~30
4. 28C: underbust ~27-28, bust ~31
5. 28D: underbust ~27-28, bust ~32
6. 28DD: underbust ~27-28, bust ~33

Band size 30:

1. 30AA: underbust ~29-30, bust ~29-30
2. 30A: underbust ~29-30, bust ~31
3. 30B: underbust ~29-30, bust ~32
4. 30C: underbust ~29-30, bust ~33
5. 30D: underbust ~29-30, bust ~34
6. 30DD: underbust ~29-30, bust ~35

Band size 32:

1. 32AA: underbust ~31-32, bust ~31-32
2. 32A: underbust ~31-32, bust ~33
3. 32B: underbust ~31-32, bust ~34
4. 32C: underbust ~31-32, bust ~35
5. 32D: underbust ~31-32, bust ~36
6. 32DD: underbust ~31-32, bust ~37

Band size 34:

1. 34AA: underbust ~33-34, bust ~33-34
2. 34A: underbust ~33-34, bust ~35
3. 34B: underbust ~33-34, bust ~36
4. 34C: underbust ~33-34, bust ~37
5. 34D: underbust ~33-34, bust ~38
6. 34DD: underbust ~33-34, bust ~39

Band size 36:

1. 36AA: underbust ~35-36, bust ~35-36
2. 36A: underbust ~35-36, bust ~37
3. 36B: underbust ~35-36, bust ~38
4. 36C: underbust ~35-36, bust ~39
5. 36D: underbust ~35-36, bust ~40
6. 36DD: underbust ~35-36, bust ~41

Band size 38:

1. 38A: underbust ~37-38, bust ~39
2. 38B: underbust ~37-38, bust ~40
3. 38C: underbust ~37-38, bust ~41
4. 38D: underbust ~37-38, bust ~42
5. 38DD: underbust ~37-38, bust ~43

Band size 40:

1. 40A: underbust ~39-40, bust ~41
2. 40B: underbust ~39-40, bust ~42
3. 40C: underbust ~39-40, bust ~43
4. 40D: underbust ~39-40, bust ~44
5. 40DD: underbust ~39-40, bust ~45

Band size 42:

1. 42B: underbust ~41-42, bust ~44
2. 42C: underbust ~41-42, bust ~45
3. 42D: underbust ~41-42, bust ~46
4. 42DD: underbust ~41-42, bust ~47

Understanding Sister Sizes

Sister sizes are one of the most useful concepts in bra shopping and almost no one in Bangladesh knows about them. Every bra size has two sister sizes — one with a larger band and smaller cup, and one with a smaller band and larger cup. Sister sizes have the same cup volume as your true size but fit differently in the band.

This matters enormously when shopping online, where not every exact size may be available. If your true size is out of stock or unavailable, a sister size will give you the same cup volume in a different band length.

To find your sister sizes: go up one band size and go down one cup letter, or go down one band size and go up one cup letter.

Sister size examples:

32B → sisters are 30C (smaller band, larger cup) and 34A (larger band, smaller cup) 34B → sisters are 32C and 36A 34C → sisters are 32D and 36B 36C → sisters are 34D and 38B 36D → sisters are 34DD and 38C 38D → sisters are 36DD and 40C

Important note on sister sizes: while the cup volume is the same, the fit experience differs. A smaller band with a larger cup letter gives more snug band support. A larger band with a smaller cup letter gives looser band support. If your true size band feels too tight, try the sister size with the larger band. If it feels too loose, try the sister size with the smaller band.

How to Check If Your Current Bra Fits Correctly

You may already own bras and want to know if they fit properly. Here are the signs of a good fit and the signs that something is wrong.

Signs your bra fits correctly:

The band sits level around your entire body — the same height at the back as at the front. It does not ride up. You should be able to fit two fingers under the band but no more than that. The underwire lies flat against your chest and ribcage without sitting on breast tissue. The centre panel between the cups lies flat against your sternum. The cups contain all your breast tissue without any spillage over the top, sides, or under the arm. There is no gaping or wrinkling in the cups. The straps sit on your shoulder without digging in and without falling off. When you lean forward, your breasts stay in the cups rather than spilling out.

Signs your band is too loose:

The back of the band rides up when you raise your arms. You feel most of the bra's weight on your shoulders rather than your ribcage. The band moves around throughout the day rather than staying firmly in place. You have to tighten your straps very short to compensate for lack of band support. If this is happening on the tightest hook, the band is too loose and you need a smaller band size.

Signs your band is too tight:

The band creates a visible ridge of skin above or below it, even under clothing. It is uncomfortable to breathe deeply. You feel constant pressure around your ribcage throughout the day. Go up one band size and adjust the cup letter accordingly using the sister size principle.

Signs your cups are too small:

Breast tissue spills over the top edge of the cup. The underwire sits on breast tissue rather than on your ribcage. There is a double-bubble effect where the cup cuts into the breast. The centre panel between the cups does not lie flat against your chest. Go up one cup size.

Signs your cups are too large:

The cups wrinkle or gape at the top. The underwire lifts away from your body. Your breasts do not fill the cups fully. Go down one cup size.

Signs your straps need adjusting:

Straps that dig in and leave red marks by the end of the day usually indicate a band that is too loose — the straps are compensating for lack of band support rather than the problem being with the straps themselves. Shorten your straps only enough to create a slight lift. If shortening does not help, look at the band size first.

How Sizing Works Differently Across Brands

One important reality about bra sizing in Bangladesh is that sizing is not perfectly consistent across brands and manufacturers. A 34B in one brand may fit differently from a 34B in another, because cup shaping, band stretch, and underwire sizing all vary.

This is especially true when comparing local Bangladeshi manufacturing with imported brands, and when comparing brands that use different cup shape philosophies (shallow vs projected cup shapes, for example).

Because of this, your measurements give you a starting size to shop from — not a guaranteed fit across every brand. When buying from a new brand, it is worth reading product reviews where available, checking whether reviewers note that the brand runs large or small, and being prepared to exchange for a different size if needed.

This is one of the reasons why shopping from platforms with clear return and exchange policies matters. AliPeak makes it straightforward to find the right size from their selection of women's lingerie and clothing.

Converting Between Different Size Systems

If you are shopping for imported bras or see unfamiliar size labels, here is how common international sizing systems compare.

UK and US sizing use the same letter system (A, B, C, D, DD) but the band numbers are equivalent, so a 34C UK is the same as a 34C US.

European sizing uses a different band number system (the band number is the underbust measurement in centimetres) and different cup letters. Here is a conversion guide for the most common sizes:

32B (UK/US) = 70B (EU) 34A (UK/US) = 75A (EU) 34B (UK/US) = 75B (EU) 34C (UK/US) = 75C (EU) 34D (UK/US) = 75D (EU) 36B (UK/US) = 80B (EU) 36C (UK/US) = 80C (EU) 36D (UK/US) = 80D (EU) 38B (UK/US) = 85B (EU) 38C (UK/US) = 85C (EU) 38D (UK/US) = 85D (EU) 40C (UK/US) = 90C (EU) 40D (UK/US) = 90D (EU)

French sizing follows the same system as European sizing, so a French 85C is the same as a 38C in UK/US sizing.

Italian sizing also follows European convention.

Australian sizing uses the same letter system as UK/US but with slightly different band numbers in some cases — generally equivalent for most sizes.

When shopping at AliPeak or any Bangladeshi online platform, products are typically listed in UK/US sizing (the number-letter format such as 34C). Always check the size chart provided by the specific product listing when available.

Special Sizing Situations

During pregnancy: Your bra size will change significantly during pregnancy, typically increasing by one or two band sizes and one or more cup sizes. Measure yourself freshly rather than guessing from your pre-pregnancy size. In the later months, a soft-cup non-underwire bra or a nursing bra is more comfortable than a structured underwire bra, and should fit your current measurements at the time of purchase.

After weight change: Significant weight gain or loss changes both your band size and potentially your cup size. Re-measure yourself if your weight has changed by more than 4 to 5 kilograms — your bra size from before may no longer be accurate.

After breastfeeding: Breast size and shape often change after the breastfeeding period ends. Re-measure when you have finished breastfeeding and are ready to return to regular bras, rather than assuming your previous size is still correct.

Asymmetrical breasts: Most women have one breast that is slightly larger than the other. This is completely normal. When fitting a bra, always fit to the larger breast — the smaller side will have a little extra room in the cup, which is far more comfortable than having the larger side squeezed into a too-small cup.

Common Bra Sizing Mistakes to Avoid

Going by the size you have always bought without measuring. Sizes from years ago, from pregnancy, after weight change, or simply from a poorly fitting bra you have been tolerating are not reliable guides. Measure fresh.

Measuring over a padded bra. This adds artificial volume to your bust measurement and inflates your calculated cup size. Always measure with minimal coverage or none.

Pulling the tape too tight for the underbust measurement. This gives a falsely small band number and leads to buying a band that is too tight. The tape should be snug, not compressed.

Assuming S/M/L is sufficient. Many affordable sets in Bangladesh are sold in S/M/L rather than cup-sized measurements. These general size labels cannot accurately reflect the variation in cup size and band length that real bra fitting requires. Wherever possible, buy cup-sized bras rather than generic sized ones.

Ignoring the back band in favour of adjusting straps. Straps are for positioning, not for support. If your bra is uncomfortable, the solution is almost always in the band or cup size, not in tightening the straps.

Using Your Size to Shop Online

Once you know your bra size, shopping online is much more straightforward. When you browse the lingerie sets collection at AliPeak, look for products that list specific cup-sized options (32B, 34C, etc.) rather than general S/M/L, as these will give you a far more accurate fit.

Before placing an order, check the specific brand's size chart in the product listing. Some brands run slightly large or slightly small, and a good size chart will indicate this. If a size chart is not provided, use your measurements to identify the closest size and consider ordering the next size up if you are between sizes.

If this is your first time buying from a particular brand or style, it is worth noting your measurements and keeping them handy. Knowing that you are a 34C with a 34-inch underbust and 37-inch bust gives you the numbers to compare against any brand's size chart quickly and confidently.

Knowing your correct bra size is one of the simplest, most immediately impactful changes you can make to your everyday comfort. Five minutes with a measuring tape and this guide will give you a number that changes how you shop — and how you feel — every single day.