Most women report that their tits end up shrinking after they breast feed. Mine went up a cup size, but I liked my B's that I used to have. And they make push up bras to help out with that pull of gravity issue we all have as we age.
Kids mess up everything on a woman. belly, tits, thighs, vagina, hormones, pyche, sex drive, confidence, etc.
Amigo, most of that happens anyway. You can't blame the kids for it. Women are hard-wired to please men when they are young but past a certain point that changes to taking care of themselves (and their progeny). You can't really blame them. It has always been what best keeps their genes in the pool. Men go through a similar evolution. They are hardwired to spread their genes as widely as possible when they are young but that changes to supporting their selected women (and their progeny) when they get older. But kids do change things . . . they make you grow up. Men and women without progeny have failed their genetic instincts to reproduce and raise children to reproductive age. But they have been enabled to engage in a great deal of worthwhile self-indulgence and egocentricity.