Former O.C. actress Samaire Armstrong has checked herself into a rehabilitation centre to overcome 'personal issues'.

The star, who played Anna Stern on the hit US show, entered an 'outpatient facility' in Los Angeles on Friday, but she will continue to work on new TV programme Dirty Sexy Money, it has been confirmed.

Her publicist told People: "Samaire Armstrong decided to enter an outpatient facility to deal with some personal issues in a therapeutic atmosphere and is doing very well.

"She continues to work on her show and will be completing her treatment in a matter of weeks."