MIRANDA KERR has stripped off for her first naked shoot.
The Aussie stunner goes starkers and is chained to a tree on the front cover of Australian Rolling Stone magazine's Green Issue.
And the reason for her change of heart about posing nude - to save Koala bears.
She told the mag: "It's a sad thing - there are only about 100,000 Koalas left in Australia.
"Something like 80 per cent of the Koalas' habitat has been destroyed since Europeans arrived in Australia.''