There was LiLo, hanging with a friend and trying not to pay attention to the fact that everyone in the area was looking at her. There was Samantha, waiting to go on. And then there was the even better known member of the Ronson family, DJ and uber producer brother Mark, an attention magnet himself. And to throw a certifiable rock god into the mix, there was the man himself, Slash — yet another surprise guest for Perry to spring on the crowd.
( More pics with Lindsay, Sam and MarkCollapse )