The public has watched her blossom to a fine young lady. But for her latest move, Emma Watson has left behind her "Hermione Granger" image and goes nude for charity.

Together with other environmentalist, Emma Watson posed in a series of "nude" photos for Earth Day. Emma's saucy pictures are going to be published in James Houston's book, "Natural Beauty."

The lovely young actress admits that she is willing to strip down and show some skin for environmental awareness but never for the "50 Shades of Grey" movie.

"My friend is supporting GlobalGreenUSA with his book Natural Beauty. It's out now. : ) X," Emma posted on her Twitter account.

"This project merges my longtime interest in the human form and my passion for the natural world," said the New York based photographer about his upcoming book. "Natural Beauty was created to celebrate the beauty of nature, emphasizing what we still have versus what we have lost. I hope to raise environmental awareness among the younger audience through this project."

In the photos, Emma looked absolutely alluring with just few pretty flowers to cover her modesty. The look was a far cry from the usual wholesome image that she tries to portray.

Aside from the sensual photos, Emma's next move will also shock her fans. She will be the star in the Sofia Coppola film, "The Bling Ring." The movie is based on young thieves who tried to target celebrities like Paris Hilton, Lindsay Lohan and Audriana Patridge.

Browse through the gallery above to see Emma Watson's hottest looks.

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