To ask if you believe 'boob or bust' bra measurements?

[rogertherabbit]

So I have read good things about this website and its tool for measuring your correct bra size. I am breastfeeding and currently wear a 36G. I'm aware it's too loose around the back, so went online and did the 'boob or bust' calculation

It thinks I need a 28H! I understand that this is only a guide, but my 'snug' measurement around my chest was 28 inches, and I thought you added 4 inches to this to get your back size - is this not correct...? Admittedly I haven't been 'formally' measured for over a decade so this might be not right

I'm aware 28H probably isn't easy to get hold of, and wondered if any of you have used this calculation and found it to be accurate. I don't want to bust a gut trying to find 28 inch nursing bras to try on when I can go for a 32 back which I can get more easily in regular shops

Thanks

I know this is a zombie thread but resurrecting as it's not a time-limited question.

I was just reading something about this method this morning and someone said that if you are a size 8 you add 20 so you'd wear a size 28 bra with whatever cup size you need. I am a size 8. Even if we say that's vanity sizing, I'm a size 10, so would need a 30.

Currently I wear a 34 or 36 B or C depending on how fat I am/feel at the time and the bra I'm wearing.

I really can't see how I can wear a size 30.

As for vanity sizing, I'd rather have a smaller cup size and larger band size if we're being vain.

Just wanted to canvass a few experiences again?