Tara Reid has checked into a rehab clinic in California, her spokesperson has confirmed.

The 33-year-old American Pie star will spend Christmas and the New Year in the Promises Treatment Center in Malibu.

It is not known what she will be treated for.

Her representative, Jack Ketsoyan, tells People.com, “Tara Reid has checked herself into Promises Treatment Center. We appreciate your respect to her and her family’s privacy at this time.”

A friend tells People Reid entered Promises on Tuesday (9Dec08): “Her friends and family are supportive of her decision. She checked in herself – it was her decision.”