When I look at myself naked, semi-naked or topless (which I probably do at least a couple of times a day), I don’t think “wow you’ve got big boobs”. In fact, I’d say my boobs were pretty average size for my height and weight. (Side note – is there even any way to find out what the average bra size is for your height and weight?) When I was at school, I would even say I had small boobs. I was a B cup, and for a 5′ 9″ girl, that ain’t too big. But as I’ve got older, my boobs have got bigger. Given they’re mostly made of fat, that’s probably in direct correlation to how much I eat (I was a whippet at school) but even now I’ve lost a stone and maintained my exercise regime, my ta-tas have stayed at a strong 32DD / 32E.