Sightings: Leonardo DiCaprio and Chris Brown party coast to coast

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Hump day was a busy one for celebrities in West Hollywood and New York, coaxing out the likes of Leonardo DiCaprio and Chris Brown, respectively.

In West Hollywood, nightspot Trousdale toasted partner Darren Dzienciol‘s birthday Wednesday with a room full of bold names. DiCaprio was surrounded by usual suspects Jamie Foxx and Jeremy Piven, while Olivia Munn held court nearby Mike ‘The Situation’ Sorrentino.

David Arquette showed, sans wife Courteney Cox-Arquette, and was clearly in good spirits -- an onlooker tells us that on his way out the actor broke into an impromptu rap with a street performer.

In New York, celbs ceelbrated the 10th anniversary of BET’s video countdown show ‘106 & Park’ at NYC nightlife staple Marquee. Brown ‘stole the show,’ according to partygoers, dancing into the night alongside Bow Wow, Trey Songz and Ja Rule.

Brown even hopped on the mike, thanking fans for ‘sticking by him’ and doing a cover of Kanye West‘s new single ‘Runaway Love.’

-- Matt Donnelly

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