Perennial party girl Tara Reid checked herself into Promises Treatment Center, her rep told People.

"We appreciate your respect to her and her family's privacy at this time," the 33-year-old actress's rep Jack Ketsoyan told the magazine exclusively for their Web site.

Ketsoyan would not say what the "American Pie" star was being treated for.

A friend of the actress told People she went to Promises on Tuesday and that her friends and family supported her decision.

Reid launched a new fashion line called Mantra in December.

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