I saw the pictures too, and her rep said it was because she was wearing bracelets that made indentations on her wrist. Personally, I believe that. She is a star and why would she want to cut herself when she's always in the public eye? That would cause unwanted attention, and she's really grounded. I am a huge fan of Demi, so I wouldn't think of her any less even if she did cut herself; but I'm strong to believe she didn't.