How to Measure Your Bra Size

How to Measure Your Bra Size

Finding your perfect bralette size doesn’t have to be a mystery! If you’re feeling a little lost, you're not alone—studies show that up to 80% of women wear the wrong bra size or fit. But don’t worry, we’ve made it easy with a step-by-step guide to help you find your best fit, because you deserve to feel comfortable and confident every day.

Step 1: Get Your Measuring Tools

Grab a soft measuring tape (or use string and a ruler if you don’t have one). This is your tool for getting accurate measurements.

Step 2: Dress for Success

Make sure you’re wearing a non-padded, underwire bra while you measure—padding can throw off your results.

Step 3: Measure Your Band Size

To find your band size, measure around your ribcage, just under your bust. Keep the tape snug and level. Round to the nearest whole number, then add 4 inches if it's an even number or 5 inches if it’s odd. For example, a 30" measurement would become a 34" band.

Step 4: Measure Your Bust

Now, measure around the fullest part of your bust, making sure the tape is level across your back. Subtract your band size from your bust measurement, and that number will tell you your cup size. For example, if your band size is 34 and your bust is 35, the difference is 1 inch, which means you’re an A cup.

Tips for a Better Fit

  • Sister Sizes: If you need a tighter or looser band but don’t want to change your cup size, try a sister size. A sister size is when you adjust both your band and cup size—either by going up in one and down in the other. These closely related sizes are called sister sizes.
  • Uneven Breasts?: Go with the size that fits your smaller breast for the most comfort. (And don’t worry, you’re not alone; uneven breasts are extremely common. 💖)

How Do You Know It Fits?

A good fit means the band is level around your body, your breasts fill the cups without spilling over, and the straps stay put without digging in. If your band rides up, your cups are too big or small, or you’re getting red marks, it’s time for a new size.

When to Measure

If your body changes—whether from weight changes, pregnancy, or simply time (gravity makes everything droop a little over time)—make it a habit to measure yourself regularly. Even if you think you’ve found your size, things can shift, so we recommend measuring at least once a year.

Want more help? Reach out to our sizing coaches at sayhey@saalt.com. It’s literally their job to help you find the right bralette, period panty, or cup/disc sizing for your shape and anatomy. We got you!
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