London: Brazilian supermodel Gisele Bundchen has bared all for an ad campaign to save the Atlantic Forest.

In the ad, Bundchen is photographed standing naked in a forest, donning some strategically placed foliage to cover her modesty and crossing her hands to cover her breasts.

She also posed topless for the cover page of this month's American Photo magazine, thesun.co.uk reports.

Her boyfriend Tom Brady, who plays for the American Football team New England Patriots, doesn't seem to mind her posing in these sexy shoots. In fact the two are set to be married soon. They are planning to hold their wedding reception at New York's Tavern on the Green.

Bundchen once dated Hollywood star Leonardo DiCaprio.