"There's beautiful ladies there, never you mind,
All beautiful shapes nature never designed."

And from the Beautiful South:

"Take a good look at these crows-feet, sitting in the prettiest eyes."

Personally, I prefer natural to enhanced. If it's a genuine problem (teeth going in odd directions, for instance) then no worries, even if it is cosmetic rather than medical. But the Zsa Zsa Gabor "mask" is just unpleasant.

On the more bizarre side, check this...

Graham.