Breast reduction swelling; do breasts typically get smaller after the swelling goes down after a reduction?

do breasts typically get smaller after the swelling goes down after a reduction? Some girls say that theirs have gotten a little bigger after the swelling. However, is it more common for the breasts to become smaller rather than larger once they have settled? Also, how much do the breasts "settle" or "drop" after surgery? I'm worried about them being a lot less perky once they heal. Thanks!