Britney and RBF were what... '98? I remember hearing they were around that time.
Nobody huge was at my Grad Nite. It was Taio Cruz (who had a few hits at the time), 3!OH!3, and Pete Wentz (Fall Out Boy bassist) as DJ. Original DJ was supposed to be DJ Pauly D (from Jersey Shore), but he had to leave for Paris or something to film the final season.