Nicole Richie is terrified that nude pictures of her are about to be leaked on to the Internet. The 'Simple Life' star was attending the new karaoke night at exclusive Hollywood nightclub 'Guys' with friends Lindsay Lohan and Mary Kate Olsen, when she lost her camera.

The digital camera allegedly contained nude and semi-nude pics of Nicole taken by her as a joke. One reveler said, "Nicole had been experimenting and had a memory card full of sexy nude photos of her and a lot of friends. They'd be embarrassed if they got out."