My girls were actually always a little uneven anyway and since pregnancy and BF'ing my 2 boys they are even more noticeably different. I'm not sure how noticable they are to others - to be honest I don't really think about it too much - just when I see them myself really.

If yours have only done this through pregnancy...maybe they'll even out as the pregnancy progresses or once BF begins and you get to keep them after that is all finished