Mischa Barton has been ordered to lose 10lbs. The actress - who was recently released from hospital after being placed under involuntary psychiatric care - was "shocked to tears" when she was told to slim down for her role as a model in new TV series "The Beautiful Life."

A source told Britain's Star magazine: "She knows that means they are calling her fat behind her back. She knows she is heavier than she needs to be but to hear it like that. It really shook her. How can Mischa play a model when she's looking so heavy?"

"She's broken down in tears more than once before shooting. It's a lot of pressure for someone who is just out of hospital."

Despite the upsetting news, friends insist Mischa is determined to shed the pounds as fast as possible.

The source added: "She's always been able to lose weight fast. Everyone knows she's been struggling, so people are just really rooting for her."

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