^Definately had her teeth fixed, like many celebreties. Why not, they're pretty now. Probably veneers.
As to smoking.. I think it's a social/party thing, otherwise we probably would've seen it more often, and it would've been noticeable on her voice (like Mika Nakashima)
Plastic surgery.. well that argument never stops, I'm not gonna say I'm 100 % on one or the other side.. but I'm leaning more to the not-operated on, she looks so different without the heavy eye make-up.
*edit: she looks pretty real here too, from CDL06-07
