The answer to the original question is, yes.
I love and adore big boobs but they MUST be real. Some fakies look positively gross and a look like having two balloons stuck to the chest is not good. Also, to have your nipples at the same level as your navel is not good either.
Ashley is my avatar and she has probably the best boobs I have ever seen. Someone in her thread complained that she had put on weight elsewhere since her boobs got bigger. That is the point, Ashley is a work of Mother Nature, not a plastic surgeon. Yes, she WILL add fat elsewhere as well as her boobs. It's called "having everything in proportion".