People magazine reports Britney Spears’ cousin/assistant Alli Sims was served with legal papers concerning the ongoing custody battle between Spears and her ex-husband, Kevin Federline early Sunday. “Alli was really shocked and covered her face,” an observer revealed. “[She was] really distraught and said ‘Oh my God.'” Read more. Check out pictures and video of Alli and Britney’s happy arrival at a private house party and tearful departure after getting served at X17 (pictures & video / pictures).