To the best of my knowledge and experience, boobs are never the same after breast feeding. I have had four, and breast fed all four, just not super long, and mine are just not as "full" as before, and my child-bearing/breast-feeding acquaintances all say the same thing. Close, but no cigar. I finally just decided to concentrate on the fact that I did what was right for my kids by breast feeding and the fact that I have them at all, bittier boobs be damned.
I have a mantra that I have spouted for years... "If I eat right, I feel right. If I feel right, I exercise right. If I exercise right, I think right. If I think right, I eat right..." Phil-SC