20. Elisabetta Canalis
Sultry Italian actress Elisabetta Canalis stripped off in September 2011 for PETA's I'd Rather Go Naked Than Wear Fur campaign.
She says: "Doing PETA's campaign has always been my dream... This is the best reason why I get naked in my life."
We say: Getting naked to stop people wearing fur is a very noble cause â€” though we can possibly think of another good reason for you to get naked in our life, Eli. If you did it for certain other charity cases, we'd definitely donate.