Sister Act! Paris & Nicky Hilton Party in L.A.

Paris Hilton in 2011

James Atoa/Everett

updated 07/19/2011 AT 10:20 AM ET

originally published 07/15/2011 AT 6:00 AM ET

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.

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