18000+ pose nude in Mexico

Thousands of naked volunteers pose for U.S. photographer Spencer Tunick as their clothes lie on a street at Mexico City’s Zocalo square May 6, 2007. A record 18,000 people took off their clothes to pose for Tunick on Sunday in Mexico City’s Zocalo square, the heart of the ancient Aztec empire. REUTERS/Henry Romero (MEXICO)