Girl-s breasts can continue growing their whole life, and their size can
fluctuate based on a lot of things, even though generally during their 20ies
is when they stop developing.
>mother and her grandmothers
Lmao this is not true and not how genetics work at all, daughters can have
drastically different breast sizes than their mothers, the same way you could
be much taller or shorter than your father. Yes, obviously family genetics
play a role, but you can't predict it so easily.