Sister Act! Paris & Nicky Hilton Party in L.A.
07/15/2011 AT 06:00 AM EDT
Also catching the Beacher's Madhouse festivities: Paris Hilton, sans new beau Todd Phillips, who hung out with sister Nicky and pal Brandon Davis. Paris danced a bit, but was also focused on her BlackBerry, while her sister was more social. At one point, Nicky went over to talk to DiCaprio and Cooper.