Coroners could not determine an exact cause of death in the sad passing of Kanye's mother, Donda West. They think that preexisting coronary artery disease might have contributed to her demise. • Mischa Barton told Ryan Seacrest on his radio show that she takes responsibility for her recent DUI. "I'm really disappointed in myself," the former O.C. heroine said. • Fellow O.C. alum Rachel Bilson did an interview with Playboy recently. She told them she won't do nude scenes! Rachel is scared of mushrooms! This interview sounds really boring but she's still adorable! [TMZ, People, People]

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