She might be the star of ABC's Private Practice, but Kate Walsh's cover photo for the March edition of Shape Magazine leaves very little to the imagination.

Right now, I feel really healthy, confident, and sexy, Walsh told Shape. I'm enjoying my 40s and wanted to share that.

The actress admitted that she was terrified to do the shoot at first--she's had to deal with the pressures of aging in Hollywood for years, though she's proud never to have had plastic surgery.

We live in a strange time when getting plastic surgery is as common as dyeing your hair, the 44-year-old said. But in my profession, I need a malleable face.

In the end, she couldn't wait to pose nude, especially for a magazine like Shape, which focuses on loving yourself inside and out.” Shape editor-in-chief Tara Kraft, meanwhile, couldn't help but admire Walsh’s “amazing figure.”

But although Kate Walsh is the latest celebrity to pose nude for a cover, she's far from the only star to strip naked for a magazine shoot. Whether to titillate or to challenge, to inspire readers or simply to express themselves, stars as diverse as Anna Paquin and John Lennon have bared all for some of the most iconic and controversial magazine covers in history.

Click through our slideshow to see Kate Walsh's nude cover for Shape magazine, and check out ten more stars who stripped naked for a cover shoot, from Lady Gaga to the Dixie Chicks.