http://www.collegehumor.com/news/ashlee_snl.wmv

"Her first song was Pieces of Me and then she was supposed to sing a second song. But instead of whatever song she was supposed to sing, Pieces of Me just started playing again with her voice singing the words despite the fact she wasnt moving her mouth. SO she ran off stage and her band kept playing."

HAHAHA - if she had any musical decency to the people she's playing for (especailly live on Saturday Night Live) she wouldn't have even thought of doing that.... but then again she probably doesn't have that much talent in the first place.