Britney Spears britsat.jpgBritney started off her Saturday night in good spirits. After dining at Wokcano in West Hollywood with pals, she took off for a house party in the Hollywood Hills, where she met cousin/bff/assistant Alli Sims and ex-lover JR Rotem. But when the group left the party (separately), things turned ugly. Alli was served by Kevin's lawyer, leaving Britney speechless when we delivered the news to her outside the party.