Step by Step Guide to Measuring Bra Size Correctly

So, you’ve finally decided to figure out your *real* bra size? Good move. Spoiler: that 34B you’ve been wearing since high school? Might not be right. In fact, studies suggest up to 80% of women wear the wrong bra size. Yikes. But don’t sweat it—we’re breaking down how to measure your bra size like a pro, step by step, with zero guesswork.

Why Getting the Right Size Matters

A well-fitted bra isn’t just about comfort (though let’s be real—no one wants digging straps or a band riding up). It affects posture, confidence, and even how your clothes fit. Wearing the wrong size can lead to back pain, shoulder strain, and an unflattering silhouette. So yeah, it’s kind of a big deal.

What You’ll Need

• A soft measuring tape (the fabric kind, not metal)
• A non-padded bra (or go braless)
• A mirror (helpful for checking fit later)
• Loose-fitting top (to avoid compression)

Step 1: Measure Your Band Size

Breathe normally and wrap the tape snugly around your ribcage, just under your bust. Keep it parallel to the floor. If the number is even, add 4 inches. If odd, add 5. This old-school trick compensates for elastic stretch in most brands.

Example: 28-inch measurement → Band size 32
31-inch measurement → Band size 36

Step 2: Measure Your Bust Size

Now, measure around the fullest part of your bust—usually nipple level. Keep the tape horizontal and don’t pull too tight. Round to the nearest whole inch.

Step 3: Calculate Your Cup Size

Subtract your band size from your bust size. Each inch equals one cup size.

Example: Bust = 37", Band = 33" → Difference = 4" → Cup = D
Final size: 34D (remember we rounded the band to the nearest even number).

Pro Tips for Accuracy

• Measure in the evening—bust size can fluctuate during the day.
• Re-measure every 6–12 months, especially after weight changes or pregnancy.
• If you're between cup sizes, go with the larger cup and adjust with strap tightness.

Common Mistakes to Avoid

• The Band Ride-Up: If the band hikes up your back, it’s too loose. Try a smaller band and larger cup (e.g., 34D → 32DD).
• Spillage: If your sides or top are bulging, the cup’s too small.
• Gaping Cups: Fabric wrinkling? Cup might be too big.

Final Thoughts

Measuring your bra size isn’t rocket science—but it does take care. Once you nail your true size, you’ll wonder how you ever lived without proper support. And hey, treat yourself to a stylish set—you’ve earned it.