So, after having a baby your boobs are bigger...will they stay like that all your life?...or will they go back to the size they had before becoming pregnant?

mine grew ALOT. went from 34 barely "b" to a 36 "DD" i breastfed my twins for about 3 and a half weeks before i dried up. i slowly lost most of it. i am now a happy "c". some women keep the size, most lost some of it, i have known some that went even small that before. each body is different.