AceShowbiz -

Sophie Monk is beautiful, sexy, and spicy. The adjectives also describe the latest ad she does for the People for the Ethical Treatment of Animals (PETA).

Shed her clothes for PETA's new spicy, bare it all ad to persuade people to "kick their meat habit," the Aussie beauty said in an interview with the organization, "If you are going to take your clothes off for something, it better be a good cause." Yeah, and one of the example is for PETA's veggie ad.

On her being a vegetarian, Monk commented "There's no doubt in my mind that going vegetarian has made me feel better not only physically but also because I learned about the suffering of animals who are raised and killed for food."

The campaign, features the former Bardot singer lying on a bed of red hot chili peppers, is accompanied wit the tagline that reads, "Spice Up Your Life. Go Vegetarian." The campaign is one more in the series by PETA which has featured other raunchy ads with scantily clad celebrities, such as Alicia Silverstone and Dita Von Teese.

Quit meat when she was a teenager, Monk's boyfriend Benji Madden of band Good Charlotte is a vegetarian as well.

Click PETA.org to watch the exclusive behind-the-scenes video from the photo shoot and check out what Monk said about animal testing and other animal issues.