Party Battle in the Hollywood Hills: Chris Brown vs. Dana Brunetti

This story first appeared in the Sept. 21 issue of The Hollywood Reporter magazine.

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Brunetti vs. Chris Brown: On Sept. 5, Sean Kingston tweeted about "the sickest mansion pool party … 3pm to 7!!!" He was referring to a pre-VMA bash hosted by Rob Kardashian featuring Chris Brown in the Hollywood Hills.

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Fans crowded the streets, neighbors complained, and the LAPD shut it down.

A source says a couple was having sex in front of a house, and parked cars kept residents from exiting. Unconfirmed reports had Justin Bieber attending.

One resident, Trigger Street Productions' Dana Brunetti (whose neighbors include manager Keith Addis and Brad Pitt and Angelina Jolie), tweeted: "Just got horrible news … Chris Brown moved into the neighborhood.

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The police have already started responding to his parties." Brown's rep declined comment, and Kingston's and Kardashian's did not return THR's calls.