I saw the Lark Voorhies pic a couple of weeks ago. I think it's more bad makeup than bad plastic surgery. Her eye makeup and under eye concealer, in particular, make her whole face look horrible and the hair isn't very flattering either. Add to that the stark contrast of that horrendous lipstick, fuzzy looking eyebrows and a weird facial expression and yeah, she doesn't look so hot. But here's one of her without the makeup and you can see she's still a very pretty, though slightly heavier, girl.

I also saw another one where she looks drop dead gorgeous, and while it's clearly relatively recent, I can't tell when it was taken, so there was no point in posting it. Well, for the heck of it:
http://www.flickr.com/photos/vieilles_annonces/6995370307/#