More info is coming out about the days leading up to Mischa Barton's hospitalization.

Sources say Mischa was on a three-day coke bender and her friends call the po-po because they were afraid she may kill herself. The hard partying is taking its toll on her looks and she's showing her boobies in public.

"She's running out of money and can't find love, so now she is looking for a good time to escape her misery. She is on a downward spiral. She is a mess. She is a suicidal, uninsurable mess."

Photographed Tuesday at an LA hotel, the once-skinny Barton (above) looked bloated and almost unrecognizable. A guest at the hotel said Barton seemed to be stumbling around poolside and at one point was topless.

A source believes it will take some time before Barton bounces back, saying: "She is a tortured and troubled person. You can survive a bad review, but when you don't show up for the premiere of your new film, it's not a good sign of where your career is heading."

First stop is the psych ward, her next stop will be rehab!