How do you measure bra size?

[PaddleBlue]

I know there were always good threads on how to measure bra size with a tape measure - can anyone remind me please? I’m never sure I’m getting the right size! Thanks!

boob or bust method is beloved by MN

I’ll look it up thanks!

Erm also:.. what do people do if one is a different size to the other?!

BooborBust gives advice on that. Most women have different sizes