Barton branded `fat` by former boyfriend

Mischa Barton`s former lover called her "one of the fattest people on the planet".

New York: Troubled star Mischa Barton was reportedly seen close to tears at a showbiz party after a former lover called her "one of the fattest people on the planet".

The former `OC` star was spotted by oil heir Brandon Davis at a magazine`s anniversary bash in Los Angeles on Wednesday, who aimed the cruel comments at her, reported New York Daily News. "OMG (oh my god). Just realised my ex turned in to 1 of the fattest people on the planet. I`m gonna start dating plus size models. Not! Mischa the Hefer (sic)," he wrote on his Twitter page. And the actress was visibly upset by the jibes. "She was chain-smoking the entire night. Mischa was never without a cigarette in her hand - and a (scowl) on her face," said an onlooker PTI