Years before she got knocked up by Benicio Del Toro, this socialite was knocked down by her own lead foot. If you haven't seen the video, Rod Stewart's daughter and her then-BFF Paris Hilton were mugging on matching motor bikes at an event when Kim's engine revved, sending her flying and, a few seconds later, tumbling onto the red carpet, legs and dress askew. Meanwhile, cameras filmed and-even worse-Paris looked on and laughed.