Finding the right bra sometimes feels like decoding a top-secret message, doesn’t it? From overbust to underbust, cup to band, there’s way more to a bra size than just a couple of letters and numbers. But here’s the truth: by getting your measurements just right, you’ll unlock the door to ultimate comfort, support, and confidence.
Let’s crack the bra code together so you can find a bra that fits.
Overbust and Underbust—Why These Measurements Matter?
To understand your true bra size, you need to know two main measurements: overbust and underbust. Think of them as the foundation and the crown of your bra fit.
1. Overbust (a.k.a. Bust Measurement)
The overbust measurement is taken around the fullest part of your bust using a measuring tape. It’s the “volume” measurement that determines how much cup space you’ll need to stay comfy and supported. A well-measured overbust gives you that natural lift, helps the cups sit smoothly, and prevents the dreaded “quad boob” effect that arises from too-tight cups and results in unsightly bulges.
2. Underbust
This measurement is all about the band—your bra’s support base. For this, wrap the measuring tape just below your bust, snug but not tight, to capture this number. The band is where 80% of your bra’s support should come from, so a well-fitted band can make all the difference.
The harmony between overbust and underbust is the secret to a bra that stays in place, feels great, and lets you move freely without adjustments or discomfort.
Measuring Like a Pro—How to Get Your Overbust and Underbust Right!
1. Start with the Underbust Measurement (for the Band Size):
- Wrap the tape snugly around your ribcage, just under your bust.
- Stand straight, relax, and breathe normally—no sucking in or puffing out!
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Record the measurement in inches and round it off to the nearest whole number.
- If your measurement is even, add 4.
- If it’s odd, add 5.
2. Next, Measure the Overbust (for the Cup Size):
- Wrap the tape gently around the fullest part of your bust, keeping it level across your back.
- Avoid pulling too tightly—you want a natural, comfortable fit.
- Record the measurement in inches and round it to the nearest whole number.
3. Doing the Math–Calculate Your Cup Size:
- Subtract your band size from your overbust measurement.
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Equine that number to an alphabet to find the cup size:
- 1 inch = A cup
- 2 inches = B cup
- 3 inches = C cup
- 4 inches = D cup
- 5 inches = DD cup
Put It Together: Band + Cup = Your Fit
- Put your band size and cup size together to get your bra size. For example, a band size of 34 and a cup size of C gives you 34C.
- An alternative method to finding your ideal bra size is Jockey’s Bra Size Calculator. Simply enter your measurements, and you’ll get an accurate size suggestion, making the whole process as easy as shopping online.
The True Meaning Behind Bra Sizes—Decoding the Numbers and Letters
- The Band Size: The number in a bra size (like 34 in 34B) indicates the measurement around your ribcage, which directly impacts how much support your bra will offer. A snug but comfortable band means most of the weight will be taken off your shoulders and shared by the band.
- The Cup Size: The letter (like B in 34B) refers to the volume your bra’s cups can hold. It allows the cup to form around your bust without gaps, spills, or squishing. For example, in a 34C and a 36C, the cups represent the same volume, but the 36C’s band size is larger, meaning its cups will be proportionately bigger.
Common Bra Sizing Challenges (And How to Solve Them)
- Straps Digging In: If your straps are leaving red marks, your band might be too large. Go down a band size and up a cup size to ease pressure on your shoulders. This can also be an issue if you’ve forgotten to adjust the bra straps using the adjuster slider. Do that, and your problem might just get resolved.
- Overflowing Cups: If your bra cups are overflowing, go up a cup size for a smoother fit.
- Gapping in the Cups: If there’s extra space in the cup, try a smaller cup size to create a flush, even look.
- Band Riding Up: If your band isn’t sitting level with the front of your bra, it’s likely too big. Go down a band size for a more secure fit.
- Center Not Sitting Flat: If the center panel of your bra (between the cups) doesn’t lay flat, you might need a larger cup size. This helps ensure everything fits snugly without squeezing.
These adjustments can make all the difference in creating a bra fit that feels made just for you.
Your Ideal Bra Awaits: Say Hello to Perfect Support
