Actor James Spader is on the hunt for a missing set of nude photos taken before he became a celebrity - because he doesn't want the public to judge the size of his manhood.

Forty-nine-year-old Spader went on holiday to a nude beach on Martha's Vineyard in Massachusetts, in the '90s, and stripped down to nothing to bake in the sun.

The relaxing holiday took a turn when the he found himself being followed by a clothed man with a camera.

And the Boston Legal star refuses to end his crusade to find the voyeur's photos, because he's so afraid the media will one day splash pictures of his naked body all over the papers.

He says, "I had been acting for maybe a decade at the time, so I was really not that recognisable, but enough... I noticed way down the beach this guy, fully clothed, walking toward me. And I notice he's got a newspaper under his arm. And now I notice he's got a camera. And I'm thinking, I don't know, maybe he's a tourist. I wasn't that savvy. And of course, being a guy, the only thing I could think is that I just gotten out of the cold water."