OK, not to play devil's advocate on purpose, but:
A) fenugreek makes breasts grow? I doubt it. Every year for the past decades some product or other makes this claim... well before the net and infomercials, ads in the back of Cosmo touted some magically effective pill/lotion/exercise program. To the best of my knowledge, NOT ONE of these supplements/programs has ever been proven to be effective. When the FDA says it works (like Viagra, etc...) then I'll consider believing it sans personal experience.
B) I don't doubt that Nadine may still be growing bust wise to some degree, but I don't think (based on the picture above vs. her early photos) that the change has been substantail (as a percentage of her body size). Nadine's overal bodyfat percentage seems to fluctuate considerably... though she's never thin, she ranges from voluptuous to borderline plumper. When she's bigger all-over her breasts also seem to gain some mass. Thus, though she may take fenugreek and she may even feel that it works, I suspect that empirically, most of Nadine's breast growth is due not to herbal supplements but rather to pasta, ice cream, cheeseburgers, etc...
That photo above is particularly misleading... if I take a photo of you with my lens centered closely on your schnoz, what part of your body do you think is going to look unusually large?
I think she looks great at any weight I've seen her at. There's just something about her that's still so arousing, even when she's at her heaviest.