How to Find Your Perfect Bra Size — Finally, a Fit That Works for You

Finding a bra that truly fits can feel impossible — especially when the bra industry only makes a small range of “popular” sizes. Many women end up compromising: choosing a band that’s too tight or a cup that doesn’t quite fit, just to make do. At The Bra Lab, we designed our bras to solve that problem — giving you customizable options so every woman can find her perfect fit.

Here’s how to find your bra size in just a few easy steps:

1. Measure Your Underbust
Wrap a soft measuring tape snugly around your ribcage, just under your bust. This measurement is your band size. Keep the tape comfortable, not too tight — you want support, not restriction. If your number falls in between the even numbers try sizing up or down to the nearest even number depending on your measurement.

2. Measure Your Bust
Next, measure around the fullest part of your bust. Make sure the tape is straight across your back and comfortably snug.

3. Calculate Your Cup Size
Subtract your band measurement from your bust measurement. Each inch of difference typically equals one cup size:

• 1 inch = A

• 2 inches = B

• 3 inches = C
  …and so on.

4. Consider Your Shape and Style Needs
Everyone’s body is unique — that’s why your perfect fit might not be on the standard store rack. This is where The Bra Lab makes a difference. Our bras are designed so you can choose band and cup separately, meaning even the hard-to-find sizes finally have options. No more settling for a cup that’s too small or a band that digs in.

Why The Bra Lab Works for Hard-to-Find Sizes
The traditional bra industry focuses on a limited range of popular sizes, leaving millions of women with few options. The result? Compromised fit, discomfort, and a lot of wasted money. The Bra Lab changes the game with:

• Customizable sizing — pick the exact band and cup combination that works for you.

• Interchangeable designs — adapt your bra for strapless, halter, or crisscross styles.

• Support and comfort — multiple size combinations for different shapes, without compromise.

With our bras, finally, you don’t have to choose between comfort and style. You can have both — in a fit that’s truly yours.

Ready to find your perfect fit? Explore our range of interchangeable bras and discover the comfort and confidence that comes with wearing a bra designed for you.