the website sophisticatedpair has this bra size calculator and it has been the best one I have found, it helped me figure my shit out!
I did this and the ridiculously involved measurement guide from A Bra That Fits and both tell me I am a 32F. If true, where do you even find that, because it sure as hell ain’t Target >:(
there is a boutique bra store in Austin that specializes in fittings and stocks hard-to-find-sizes. That’s where I got fitted the last time, but if I went again I’d feel guilty not buying anything and all their bras are $40+ per the Breast Penalty Act of 1965.