Celebrity Plastic Surgery Gone Bad? Check out these stars who have taken too much of a liking to going under the knife...

Most celebrities have had "a little work done" over the course of their careers, going for the usual nip here or tuck there to improve their appearance and keep themselves looking youthful enough to keep landing the big roles; and then there are the few dozen who have taken cosmetic surgery procedures to their most extreme.

Heidi Montag