For example a 32d has the same cup volume as a 34c or a 36b or a 38a.
Example 32d cup size.
During the bra manufacturing process the same exact bra cup may be paired with different band lengths to create multiple bra sizes.
But are wider so hold more volume overall.
Imagine you re a 32d.
A d cup on a 32 band means your underbust is around 32 and your bust is around 36 does that sound.
In doing so the number of your band size and the letter of your cup size shifts by one size.
Knowing your sister size can be helpful when adjusting your.
For example the same exact cup is used to make 38a 36b 34c 32d and 32dd bras.
So a 36b has the same cup size as a 34c and the 32d.
However this is not the case.
For example if you wear a 34c your sister size down would be 32d.
For that same reason bra sizes have sister sizes these cup sizes may appear to be different but the cup volume will actually be the same because the band size is different.
The importance of sister sizing.
An easy way to determine your true cup size is simply to locate your bra size on the chart below and see which cup letter is paired with a 34 band in your row.
These are the so called sister sizes.
The only difference is the band size.
That s why one person s d cup size can end up being the same overall size as someone else s b cup size.
The cup size means nothing without knowing the band size.
Let s do another bra cup size comparison.
We re here to help.
You may refer to the chart below and use it as a guide to help you identify your appropriate sister sizes.
If you wear a 32d you are actually a true c cup.
A 34d has cups that stick out the same distance.
They d be too big for you so to wear a 34 band you d need a smaller cup size a 34c.
One actual size smaller than your current band size and one letter name larger than your current cup.
If there are two women one wearing a 34c and other wearing a 32d then the volume of the breast tissues if measured would.
Finding a sister size requires a set of one size shifts in opposite directions e g 34c and 32d don t worry.