Wearing the wrong bra size is more common than you think. In fact, studies show that over 80% of women wear an ill-fitting bra daily, often without realizing it.
Whether your straps are slipping, your band is digging in, or your cups are gaping, the problem usually lies in sizing. But don’t worry—we’re here to help you measure your bra size accurately at home, using just a soft measuring tape and a mirror.
🛠️ What You’ll Need:
A soft measuring tape (in inches or cm)
A mirror or phone camera
A well-fitting (non-padded) bra
Pen and paper (or notes app)
📏 Step 1: Measure Your Band Size (Underbust)
Where to measure:
Wrap the measuring tape snugly around your ribcage, directly under your breasts.
Tips:
Keep the tape horizontal and level.
Breathe out normally (don’t puff your chest).
Round to the nearest whole number.
Result:
If your underbust is an even number, that’s your band size.
If it’s odd, round up to the next even number.
Example:
If your underbust measures 31 inches → Band size = 32
🎯 Step 2: Measure Your Bust Size (Overbust)
Where to measure:
Place the tape around the fullest part of your breasts (usually at nipple level).
Tips:
Don’t squish your breasts.
Make sure the tape is straight and not riding up at the back.
Stand normally, arms down.
Result:
Write this number down. You’ll use it to calculate your cup size.
🔢 Step 3: Calculate Your Cup Size
Formula:
Cup size = Bust size (step 2) − Band size (step 1)
Use the difference to find your cup letter:
Difference (inches) | Cup Size |
|---|---|
1" | A |
2" | B |
3" | C |
4" | D |
5" | DD (E) |
6" | DDD (F) |
7" | G |
📌 Example:
Band size: 34
Bust size: 37
37 − 34 = 3 → C cup
So your bra size = 34C
👁️ Visual Guide
Here’s a simple breakdown you can visualize:
✅ Measure tightly under bust
✅ Measure loosely over the fullest bust
🧮 Subtract and match to the cup chart
🧷 Choose the right bra based on fit and feel
(Want me to create a custom infographic or diagram? I can generate one for you.)
🧠 Common Bra Fitting Mistakes
🚫 Measuring over clothes
🚫 Using a padded bra
🚫 Wearing an old stretched-out bra
🚫 Not standing upright
🚫 Rounding too high or too low
🛍️ Pro Tips for Bra Shopping
Try different styles: balconette, full coverage, plunge.
Sister sizes exist! (Example: 34C = 32D = 36B)
Your size may change due to weight, hormones, or age.
Try before you buy, or order from stores with good return policies.
🔎 Related Searches
How to find your true bra size at home
Best bras for small vs large cup sizes
Signs you're wearing the wrong bra
Bra size calculator without tape measure
Sister sizes bra chart
💬 Final Thought
Knowing your correct bra size isn’t just about looks—it’s about comfort, posture, confidence, and health. Measuring at home is easy, fast, and can completely change how your clothes fit and feel.
If you’re still unsure, many lingerie stores offer free fittings, or you can use a virtual bra fit service.
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