The Prescription for the Perfect Fit

Keep your chest at its best by ensuring your girls are in the right size bra. Bra sizes can differ from year to year as you lose or gain weight or change your exercise routine,
so it’s important to get the correct measurement about every six months. Let’s see how you measure up! Follow these three simple steps to find the right fitting bra for you:

Step 1 Measure For Band Size

Measuring for bra band size

Put on your best-fitting (non-enhancing, nonminimizing) bra—this means no push-up, padded or sports bras. With tape measure
in hand, take a deep breath, and let it all out (you want the smallest possible measurement). Now, keeping the measuring tape
parallel to the floor, measure the band directly under your bust and round to the nearest whole number…

  • If the measurement is even, add 4”
  • If the measurement is odd, add 5”

Step 2 Measure For Cup Size

Measuring for bra cup size

Keeping the tape measure parallel to the floor and your posture straight as can be, measure the fullest part of your bust
(most likely this will be around your back and across the nipple line) and round to the nearest whole number.

Step 3 Calculate Bra Size*

Now, subtract your band measurement (Step 1) from your bust measurement (Step 2). The difference between the two measurements will determine your
cup size. (Generally, each inch represents a cup size.) Your calculation from Step 1 represents your band size.

  • 1/2” = AA
  • 1” = A
  • 2” = B
  • 3” = C
  • 4” = D
  • 5” = DD or E
  • 6” = DDD or F


Step 1: 34” + 4” = 38” band
Step 2: 40” bust
Step 3: 40” - 38” = 2”

2” = Size B, so bra size = 38B

*Important Note: This measuring system is less accurate for cups sizes above a D.

Helpful Hints-

You’ve found your size, now make sure it fits with these helpful hints:

  • Bust and band do not go hand in hand. Just because you’re busty does not mean you will need a bigger band size — the cup size is where volume counts.
  • Your cups should be full but should not runneth over. If you’re spilling over the sides, it’s time to re-measure.