Well I bottlefed 3 babies , and am now BF this one, and I am assumng they will have just the same effect on my boobs as before, any growing in size in pregnancy and birth, and mine went huge after birth when milk came in till 2 weeks later when they went down again, they still changed from pert boobs with the feeling they had something in them (like I imagine a boob job implant is like), to a boob without any filling inside. sorry to be a bit honest here , but after about 5 years I put on a tiny bit more weight, as lost llots after baby, and actually they did pick up a bit, I expect my boobs to be able to be tucked in my pockets soon.....