Clooney's Ex Elisabetta Canalis Strips for PETA

Elisabetta Canalis will likely wear some skimpy costumes on "Dancing with the Stars" -- but she's taken it all off for another project close to her heart.

George Clooney's ex-girlfriend is the latest to strip down for PETA's "I'd Rather Go Naked" campaign, showing off her amazing body in a set of ads just released today.

In a press release, Canalis says "I decided to go nude because I think that nudity always creates a big reaction." She continues, "That is what is required to keep people's attention on such a brutal practice …. just for the sake of fashion."

Pretty good timing, considering "Dancing" starts up soon and all eyes are on fashion this week thanks to Fashion Week in NYC.

Check out Elisabetta's other ad above, plus see which other stars have stripped for the cause.