VIDEO: Thousands Pose Naked At Sydney's Opera House!

Photographer Spencer Tunick assembled a group of about 5,200 nude people for a photo shoot, RadarOnline.com has learned, to pose in front of the famed Opera House in Sydney, Australia on Monday.

Tunick, an emerging star in the photography world, is known as a shy man who prefers to dress in black, and refers to his pictures as "installations." He has a niche for taking huge nude group shots.

"It was difficult to get the straight participants to embrace the gay participants and vice versa," Tunick said. "So I was very happy that that last set up finally got done and everyone came together in a united, friendly kiss, a loving kiss in front of this great structure."