Body painter Trina Merry hides the naked human body in plain sight by painting women exactly like the background of New York City. At the right angle, the women are essentially camouflaged because they blend in seamlessly with the cityscape. It's pretty amazing how perfect the paint is. NSFW.
"I wanted to engage the city and understand it and make some observations. So instead of a person right in front of the Empire State building or the Statue of Liberty, they're softly in the background, and you've got more of a reflective view of the person within the landscape."
It's a painstaking process. The models pose in front of the particular NYC landmark -- the Brooklyn Bridge, the Guggenheim, the NYC skyline, etc. -- and Merry paints them to match up. Sometimes she even has to re-paint the models if the background changes.
You can see more of Trina Merry's excellent work here.