Alicia Silverstone has taken it all off for the sake of vegeteranism.

The Clueless star stripped down for a brief, 30-second TV commercial for animal rights activists PETA.

The ad starts with a seductive Silverstone getting out of a swimming pool with her hands strategically placed over her body.

The shot quickly pans out to show Silverstone sitting at the edge of the pool with her back to the camera, and her buttocks in clear view.

She says over the film: "I am Alicia Silverstone, and I am a vegetarian”

"There's nothing in the world that's changed me as much as this. I feel so much better and have so much more energy. It's amazing."

Watch the Photograph at http://www.entertainmentwise.com/news?id=37114