Troubled young starlet Mischa Barton has a “sober coach.”

Producers on the Barton’s new TV show, The Beautiful Life, have hired someone to stay with her at all times following her hospitalization under involuntary psychiatric hold at Los Angeles’ Cedars-Sinai Medical Center in July.

A source said, “Mischa is doing great since she returned to work, but after a chat with show bosses she agreed she would appreciate some extra support.”

The appointment of a sober coach comes after the 23-year-old star’s friends admitted they were worried the Homecoming actress was jeopardizing her recovery after she was seen partying at the All Points West music festival in New York just days after she left hospital.

Family friend Eric Ziegenbein said, “It’s scary to see her out right after she’s received treatment. When I found out she’d been partying again, I was shocked. I thought she would chill out for a bit. The fact she was out right away proves she’s not taking things seriously enough. It was like a big ‘f**k you.’ She’s too proud and independent sometimes.”

Another friend, Suzanne Coppin, is frustrated Mischa isn’t listening to the advice of loved ones and is trying to deal with her problems alone: “She has a support group, but it’s obvious she’s ignoring them. I’m disappointed she’s not taking advice and is still doing her own thing.”