I prefer natural. However, I think fake boobs look good under clothes, and let's face it, most women do have their clothes on most of the time!
Naked, they seldomly look good in my opinion, and FBB's struggle at contest time, due to no body fat to cover up the "joins" and the skin looks stretched etc. Damn, I'm right off my supper now.
However, at the end of the day, it's the woman's decision, and if they think it looks good to have a boob job, and if it makes them feel more confident, that's what matters. And then hope you choose a good surgeon.