Gisele Bundchen went back to nature in her latest campaign, by posing naked.
The supermodel bares all, apart from some strategically placed shrubbery to preserve her modesty in a charity advert.
She is backing a campaign to save the Atlantic Forest, and hopes this advert will help persuade people to get behind the cause.
Gisele is also pictured topless on this month's American Photo magazine, wearing only denim hotpants.
This wasn't for any cause in particular, we don't think, but if we had a body like that, then we'd probably want show it off too!
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