Sienna Losing Jamie Burke to Rock?

HAIR METTLE Burke

Is model-slash-musician Jamie Burke getting sick of his full-time gig as Sienna Miller's man candy? It looked that way to a witness on Sunday at Hollywood's Chateau Marmont, where the long-locked looker (and former Kate Moss flame) repeatedly told friends that he's on the hunt for a management company and stepping up efforts to launch his music career.

The underemployed boy toy has had a fair amount of time on his hands lately. When not busy tousling that hair, he's been dutifully trailing Miller across the globe—the duo made out on a beach in Mexico in February, got tattoos together in New York in March, and just this Sunday engaged in the classic Hollywood canoodle over multiple glasses of rose in the garden at the Chateau Marmont.

But as the attention rained down on Miller, Burke kept coming back to his plans to finally get that rock star life off the ground. Maybe Diddy's looking for a new act?