She's become virtually inseparable from boyfriendGian Marco Flamini since they started dating earlier this year.And on Monday, Mischa Barton and the actor were once again spotted running some errands together in Los Angeles.Barton, 34 looked casually stylish in a black t-shirt and skirt paired with a long navy cardigan with red trim. Out and about: Mischa Barton, 34 looked casually stylish in a black t-shirt and skirt paired with a long navy cardigan with red trim as she ran errands in LA on MondayShe added black tights and brown and black leather ankle boots.The former star of The O.C.
