NIP/TUCK star Kelly Carlson has admitted undergoing cosmetic surgery - but she won't say where.

The actress plays a surgically-enhanced model in the hit TV show and is not ashamed to admit she has had a little help herself.

Carlson says, "I don't like saying what I've had done, but I'm not totally natural, how about that?

"I think plastic surgery is private, but you shouldn't deny it, because people know anyway."