Showbiz Spy reports: The actress has been celebrating since winning an Oscar for her role in Silver Linings Playbook.
“Jennifer was partying it up with one of her friends, smoking weed and drinking wine and dancing around like crazy,” says a witness.
“You could smell the weed wafting out from her room.
“She’s just a young girl and feels overwhelmed.
“She’s a tough girl, but the pressures of Hollywood can take their toll on anyone.”
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