How to Measure For a Bra at Home

Ever rip your bra off the second you get home? You’re not alone. But chances are, it’s not bras you hate—it’s the wrong size. Knowing how to measure for a bra can make all the difference. The right fit doesn’t dig, ride up, or ruin your outfit—it just works.

Not Sure If Your Bra Actually Fits?

If your bra constantly bugs you, it might not be the bra—it might be the size. Here are a few signs it’s time for a fit check:

• The cups wrinkle or collapse
  

• Underwire pokes into the sides of your breasts
  

• The band rides up your back
  

• You’re spilling out of the cups
  

• Straps slip off your shoulders
  

• Your bra lifts up when you raise your arms
  

• The underwire sits on your breast instead of under it

How to Measure for a Bra That Actually Fits

Getting your bra size right isn’t as complicated as it sounds—you just need a soft measuring tape and a few minutes. Follow these steps to find your perfect fit at home.

Step 1: Measure Your Band Size

Start by wearing your best-fitting non-padded bra—or go braless. Wrap a measuring tape snugly around your ribcage, just under your bust. Make sure the tape is level and sits flat against your skin.

• Take a deep breath out before reading the number—you want the smallest, most accurate measurement.
  

• If you land on a half or odd number, round up to the next whole even number.
  

That number is your band size. For example, if you measure 33 inches, round up to 34.

 Pro Tip: A new bra should fit firmly on the loosest hook. Bands stretch over time!

Step 2: Measure Your Bust

Now, measure around the fullest part of your chest (usually at nipple level), making sure the tape is straight across your back and not digging in.

The tape should lightly skim over your bra—no squeezing!

Step 3: Do the Bra Math (Find Your Cup Size)

Time for a little subtraction:
Bust measurement – Band measurement = Cup size

Here’s how that difference translates:

• 1 inch = A cup
  

• 2 inches = B cup
  

• 3 inches = C cup
  

• 4 inches = D cup
  

• ...and so on
  

Example: Bust = 37", Band = 34" → 3" difference = 34C

Step 4: Understand Your Sister Size

Not all bras fit the same—even in the "right" size. If the cups feel off or the band feels tight, try your sister size:

• Go up a band size and down a cup size, or
  

• Go down a band size and up a cup size
  

Example: If 34C feels too tight in the band, try 36B.

One Last Thing: Your Size Can Change

Weight changes, workouts, pregnancy, even your cycle can all affect your bra size—sometimes more than you’d think. So if something suddenly feels off, don’t stress. Just remeasure and adjust.

Tips:

If your band is 75 cm and your bust is 80 cm

Difference: 80 - 75 = 5 cm → corresponds to C cup

What is a sister size?

Even if you’ve measured carefully and picked a bra that matches your breast shape, sometimes the fit just isn’t quite right. That’s where sister sizes come in. A sister size means a bra that has the same cup volume but a different band size.

If the cups feel good but the band is too tight or too loose, trying a sister size can make all the difference.

How to find your bra size haven‘t measuring tape？

No measuring tape? No worries! You can use something like a piece of string or ribbon—just make sure it’s not stretchy. Wrap it around your bust and underbust to get your measurements, then lay the string flat and measure its length with a ruler. Just like with a tape measure, keep the string level and snug, but not too tight.

Getting your bra size right makes all the difference. Take a moment to measure yourself properly, and you’ll feel the comfort you deserve. Ready to find your perfect fit? Check out Fallsweet’s collection and feel the difference today!

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