If you get a breast reduction, and later on have a baby, do your breasts grow back during breastfeeding?

Yes.But: After breast reduction if you become pregnant your breast will get larger during pregnancy as before.But whether you will be able to breast feed is another story.Sometime patients report that they have been able to breast feed.And if you breast feed , certainly breast will enlarge and may sag too.

Grow not regenerate: First it is difficult to say of you will be able to lactate although it is very possible as long as the ducts were not transected. The residual breast tissue will respond to hormones and grow but will likely demonstrate onvolutional atrophy returning close to pre pregnancy size upon cessation of lactation.

They can enlarge...: It is not very common, but I have done repeat breast reductions on women who previously had breast reductions, became pregnant, and had significant enough enlargement of the breasts that they required a repeat reduction.