You don't. That is not something you can eyeball.
All you have to do to find out your bra size is go to any bra and underwear shop, get your self fitted and buy a bra of your size.
Someone can only tell you your bra size if you get someone in a bra fitting store to measure your breasts with your bra on.
You could measure it. if there are tags on the bra that tell you, then look for it.
when the training bra's start getting too small, or If they have your size in a regular bra.
I am a 28 inch waist and my size in womens is 4 or 5
a brassiere is a womens bra
You cannot tell a girl's bra size just by looking unless you have years of experience in professional bra fittings. Unless you are planning to buy her a bra, you really don't need to know. Focus on finding out more about her interests instead.
You can't. All you can do is guess.
its a big how can i tell ok i think 36d
U can go 2 the bra department of a store and ask the lady that works in the department to have someone measure u and they will measure u over your shirt and they will tell u what your size is.
It will be a different size everytime you see her, it will be uneven and sometimes look like a square, and if you ask her bra size, she will say a letter that doesnt even exist. (On the bra scale anyway)
you cant have a larg bra size you have a larg bra size