This new ad puts the swimsuit competition to shame!

Miss USA pageant winners Alyssa Campanella (2011), Shanna Moakler (1995), Shandi Finnessey (2004) and Susie Castillo (2003) get naked for PETA's new "Say No to Fur" ad, wearing nothing more than the heels on their feet.

The four women are calling on the pageant world to stop giving furs to winners.

"When it comes to the anti-fur campaign, it's really close to my heart," says Moakler. "I've been awarded fur coats and I'm hoping to stop it in our pageant community."

"i couldn't believe that that was still going on, knowing what we know today," adds Castillo.

You can learn more over at PETA's website. Check out the gallery above to see who else has gone nude in protest!

This year's Miss USA pageant airs Sunday night on NBC.

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