from those measurements, it sounds like you might be a 30B. 34 band sounds like it would definitely be too big for your ribcage.
I have gone all through life wearing 32A but realizing now how it doesn't fit me properly and the band is too big.
I found the different pages on this website really useful for me to learn about proper bra fit:
http://www.venusianglow.com/p/bra-matrix.html
I have gone all through life wearing 32A but realizing now how it doesn't fit me properly and the band is too big.
I found the different pages on this website really useful for me to learn about proper bra fit:
http://www.venusianglow.com/p/bra-matrix.html