If they are fake then you don't have too worry about them getting smaller when dieting. Honestly, if your boobs are only big because you are big everywhere else, then there is no way for you to keep your big boobs, if you get smaller. And even if your boobs didn't get smaller, you would just look unproportional. I wouldn't worry about your boobs so much, they won't disappear.
By working and exercising that part.
We can grow big breasts by doing sex with other boys because they suck our breasts.
BIG
Answered your own question. It's genetics. You inherited from your mother.
as big as God intends
Big.
As Big as E
Big breasts are 'des gros seins' (familiar/slangish) in French.
Genetics.
It varies!
A cup
I guess that depends on how big your breasts are....?