How to Measure Your Bra Size
Getting the right bra size makes a bigger difference to comfort than any other choice you make when buying a bra. It takes two measurements and a few minutes.
You will need a soft measuring tape. If you don't have one, use a piece of string and hold it against a ruler afterwards.
Step 1: Measure your band size
Wear a non-padded bra or no bra. Stand straight.
Wrap the tape around your ribcage, directly under your bust, where the band of a bra sits. Keep the tape level all the way around and pull it snug but not tight. Breathe out and take the reading in inches.
If the number is odd, add 5. If it is even, add 4. That gives your band size.
For example, 31 inches plus 5 is a band size of 36. And 32 inches plus 4 is also 36.
Step 2: Measure your bust
Wrap the tape around the fullest part of your bust, usually across the nipples. Keep the tape level and loose enough that it isn't pressing in. Take the reading in inches.
Step 3: Find your cup size
Subtract your band size from your bust measurement. The difference tells you the cup.
Difference of 1 inch: A cup
2 inches: B cup
3 inches: C cup
4 inches: D cup
5 inches: DD cup
6 inches: E cup
So if your band is 36 and your bust is 39, the difference is 3 inches, which makes you a 36C.
Bra Size Chart
Band size | Underbust measurement
30 | 25 to 26 inches
32 | 27 to 28 inches
34 | 29 to 30 inches
36 | 31 to 32 inches
38 | 33 to 34 inches
40 | 35 to 36 inches
42 | 37 to 38 inches
Signs your bra doesn't fit
The band rides up your back. The band is too loose. Go down a band size.
The band digs in or leaves deep marks. The band is too tight. Go up a band size.
Your breast spills over the top or sides of the cup. The cup is too small. Go up a cup size.
The cup wrinkles or gaps. The cup is too big. Go down a cup size.
Straps keep slipping. Try tightening them first. If they still slip, the band is likely too loose.
You keep pulling the band down. The band is riding up, so it's too loose.
A useful check: the band should do most of the work of holding the bra up, not the straps. You should be able to fit two fingers under the band and no more.
When to measure again
Your size can change with weight, pregnancy, and after breastfeeding. It's worth measuring again once a year, or any time a bra that used to fit stops feeling right.
Between sizes?
If you fall between two band sizes, try the smaller band with the next cup up. A 36C and a 34D hold roughly the same cup volume, so if 36C is loose in the band, 34D may fit better.
If your bra is slightly tight in the band but right in the cups, a bra extender adds about an inch to the band without changing the cup.
Still not sure? Message us on WhatsApp at +92 316 5319963 with your measurements, and we'll help you pick a size.
