How to Measure Bust Size for Perfect Fit

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Let’s be real—finding a bra that actually fits is like winning the lottery. As someone who’s spent years testing lingerie brands and helping clients ditch the "squish and squeeze" routine, I’m here to break down how to measure bust size the right way. Spoiler: your band isn’t supposed to ride up, and your cup shouldn’t spill like an overfilled latte.

Why Measuring Matters (And Why Most Get It Wrong)

Over 80% of people wear the wrong bra size—yep, that includes you if you’ve ever guessed your size based on what ‘feels okay.’ But comfort isn’t the only goal; proper support affects posture, confidence, and even back pain. The key? Accurate measurements.

What You’ll Need

  • A soft measuring tape (the cloth kind, not metal)
  • Minimal clothing (a lightweight bra or none at all)
  • A mirror (to check tape alignment)

Step-by-Step: How to Measure Bust Size Like a Pro

  1. Measure Your Band Size: Wrap the tape snugly around your ribcage, just under your bust. Keep it parallel to the floor. Round to the nearest whole inch. If it’s even, add 4; if odd, add 5. That’s your band size.
  2. Measure Your Bust Size: Loosen the tape and wrap it around the fullest part of your bust—usually nipple level. Don’t pull tight; let it rest gently. This is your bust measurement.
  3. Calculate Cup Size: Subtract your band size from your bust size. Each inch equals one cup size (e.g., 1” = A, 2” = B).

Cup Size Chart (Inches)

Difference (Bust – Band) Cup Size
1 inch A
2 inches B
3 inches C
4 inches D
5 inches DD/E
6 inches DDD/F

Real Talk: Common Mistakes

  • The Band Ride-Up: If it hikes up your back, go down a band size and up a cup (e.g., from 36B to 34C).
  • Spillage: Tissue spilling over the cup? You need a larger cup, not a bigger band.
  • Ignoring Shape: Breasts come in shapes—bell, shallow, full-on-top. Brands like Panache and Elomi cater to different profiles.

    • Final Tip: Re-Measure Every 6 Months

    Weight changes, hormones, and aging shift your size. I recommend re-measuring every few months, especially after pregnancy or major weight loss.

    Mastering how to measure bust size transforms your lingerie game. No more guesswork—just fit, comfort, and confidence.