pregnant boobs - how big will I go?

[babyc]

What is normal growth in pregnancy? I'm halfway and have already gone up one back size and 4 cup sizes - but I wasn't small to begin with! I haven't really got a bump, just look normal (I was a 6-8) but with huge boobs. I'm buying new clothes for my boobs not my bump!
Did anyone else have this, and if so did you slow down from this point? The book I have says two cup sizes over the whole pregnancy is normal - surely not?

I went from a 32f to a 34hh very quickly. Twice I woke up and cried out they've grown overnight! With non-wired I was in pain (and looked bad) most days with badly fitting bras and getting home in tears pulling my bra off a.s.a.p.. Bravissimo where very nice and sorted me out with some underwired, which you can wear untill the milk kicks in. What I will do after that I don't know? MIL is a midwife and said she just wore underwired as it was the only way to get the support.

Wore soft bras last time I was pg and got huge and felt hideous, as they weren't doing anything support wise. Sticking with underwires this time, they're fine as long as the wire goes round into your underarm area rather than digging into breast tissue. Last time went from 32 to 40 - big baby, back to 34 within a few weeks of birth. Up a million cup sizes when bf, down to H, may have got smaller but got pg again. Also found bravissimo helpful

Underwired bras are fine as long as they fit well, I've never owned a maternity bra - they are vile. I also wore underwires while breastfeeding & have never had any problems at all.