Nude people gather on the steps of the Sydney Opera House as they pose for a photo by Spencer Tunick of the U.S. , Monday, March 1, 2010. Some 5,200 people stripped down for the commissioned photo that is title "Mardis Gras: The Base." (AP Photo/Rick Rycroft)HP
Nude people lay down as they gather on the steps of the Sydney Opera House while they pose for a photo by Spencer Tunick of the U.S. , Monday, March 1, 2010. 5,200 people stripped off for the commissioned photo that is title "Mardis Gras: The Base." (AP Photo/Rick Rycroft)HP
Nude people lay down as they gather on the steps of the Sydney Opera House while they pose for a photo by Spencer Tunick of the U.S. , Monday, March 1, 2010. 5,200 people stripped off for the commissioned photo that is titled "Mardis Gras: The Base." (AP Photo/Rick Rycroft)HP
Nude people raise their hands as they gather on the steps of the Sydney Opera House as they pose for a photo by Spencer Tunick of the U.S. , Monday, March 1, 2010. 5,200 people stripped off for the commissioned photo that is title "Mardis Gras: The Base." (AP Photo/Rick Rycroft) HP
