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.