But to get a rough guide of your bra size from home, you'll need a flexible tape measure.
First you'll need to measure yourself around your torso, underneath your breasts. You need to add 4 or 5 to whatever that measurement is in order to make it an even number. So if you measured 32, your band size would actually be 36. If you measured 33, your band size would be 38.
Next you'll need to measure around your beasts, making sure the tape measure goes across the fullest part - usually in line with your nipples. Make sure the tape is not too tight; you want it to be a loose, comfortable fit without being droopy.
Then you need to figure out the difference. So if you first measured your torso as 32 inches, then added 4, your band size is 36. Then if you measured around your breasts and that number was 36, the difference would be zero. If your breasts were 38, the difference would be two.
So.
Difference of 0: A cup
Difference of 1: B cup
Difference of 2: C cup
and so on.
This is just a rough guide, and when you go to the store you'll want to make sure the bra can fit comfortably on the loosest hooks. The bra should not wrinkle, squish you (making a line across the top of your breasts and making you look like you have 4 boobs!), feel too tight or loose, and it should support you if you jump up and down.
The style of straps, the fabric of the bra, and whether or not it has an underwire will also affect how it feels to you.
This may all sound confusing, but if you've got your basic size, your best bet is to try on loads of bras and pick the one that feels right and most comfortable - and then buy a few of the same one!!
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