Heidi Klum wears nothing but a bag for an amfAR campaign.

The model stripped down and covered herself up behind a strategically placed blue-and-red bag to benefit AIDS research. The canvas tote bag, which has a beach-inspired theme, was designed by John Paul Gaultier to raise awareness. The special edition bag goes on sale June 1 at Bloomingdale's. The bag is $35, the Daily Mail said.

One-hundred percent of the proceeds will go to AIDS research.

Only her arms and legs are visible in the picture. Her hair is slightly tousled, and her bright red lipstick and bright red nails tie in with the bag.

"Our longtime friend @HeidiKlum bears all for @amfAR to help us launch the release of a special edition canvas tote bag designed by the renowned @JPGaultierOfficial to raise HIV/AIDS awareness," the press release said.

This is not the first time Klum has posed naked.

For the May 2012 Allure issue, she posed naked and covered herself with her arm and hand. At the time, she explained that her body was all her own.

"I'm proud to be able to say, in this day and age, I haven't done anything," she said. "Everyone has a view of what's not pretty, and [plastic surgery] just doesn't look pretty to me."

She recently attended the amfAR gala at Cannes and was photographed with Justin Bieber.

In some of the pictures, it seemed as though Bieber was getting a little close to the supermodel. His hand appeared to be over her breast. She then changed and was seen being cozy with Vito Schnabel. The two were certainly not shy about PDA.

amfAR has been around since the 1980s, and it has supported more than 2,000 around the world.