Got Questions? We've got answers from experts and parents who've been there.
Breasts are incredibly sensitive to hormones. If you're lopsided to begin with, the smaller side will be less receptive to hormones because there's less breast tissue, so both breasts won't grow at the same rate during pregnancy. In addition, if a woman with equal-sized breasts has had surgery on one, the scarred breast may also be less receptive to pregnancy hormones. --Robin McGavin
The answers from our experts are for educational purposes only. Please always refer to your child's pediatrician and mental health expert for more in-depth advice.