It's from fashion photographer, David Lachapelle and it's called Tantric Sex. He did a controversial shoot with Mike Myers (posing as a Hindu God) for Vanity Fair in 1999, which got the magazine into trouble. You can see those images at: http://www.saja.org/vfdetail.html

I guess they are pretty much nude, if you don't consider butterfly vibrators and body paint as clothing. It is a photograph, but the image has been really doctored, so it has a painterly effect.