Uh-oh! She's back at it!
Mischa Barton has seemingly returned to her party girl ways — and her old drug and alcohol habits are coming back to haunt her.
A witness to the 29-year-old’s partying tells In Touch, “We were at a party together about a month ago and Mischa was doing mushrooms, cocaine and smoking pot.”
Mischa's mug shot in 2007. (Photo Credit: Getty Images)
Back in 2007, The O.C. actress was arrested for a DUI and drug possession — and was ordered by a judge to visit a rehabilitation center.
In 2009, her family staged an intervention, after she passed out from Xanax (which she claims she had a prescription for following her wisdom teeth surgery) and was subsequently committed to a psychiatric ward after she threatening to commit suicide.
Could this be Mischa’s return to the dark side of Hollywood?
Mischa partying with friends in 2008. (Photo Credit: Splash)
“She’s partying really hard. She definitely could be in a bad spiral right now,” the witness adds.
Though some may feel it was a one-time setback — two weeks later, the actress (whose rep didn’t respond to a request for comment) was at a bar in NYC, Cabin Down Below, where another onlooker claims to have seen her using pot and cocaine.
RELATED: Mischa Barton Allegedly Sues Her "Greedy" Mother for Stealing Her Money!
In 2013, the blonde-haired beauty told to People about her old partying ways, saying, “It was a train I could not get off of.”
Let’s hope she didn’t hop back on an express...
For more on this story, pick up the latest issue of In Touch Weekly, on newsstands now!