Scarlett Johansson has angrily hit back at reports she's the latest Hollywood starlet to go under the surgeon's knife.

The 23-year-old Lost In Translation star is threatening legal action over claims in an American magazine that she had plastic or cosmetic surgery on nose.

The publication, which ran her picture with the cover line, 'A List Nip/Tuck', quotes her as saying: "I definitely believe in plastic surgery.

"I don't want to be an old hag. There's no fun in that."