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After making major progress in treatment at the Cirque Lodge in Utah, Brooke Mueller has officially left rehabilitation, and will now begin the transition to an "aggressive" out-patient program in LA.

A rep for Mueller said in a statement:

    "After successfully completing an intensive three-month drug and alcohol treatment program, Brooke returned to Los Angeles yesterday and has immediately begun an aggressive outpatient program that includes a sober companion. Brooke is feeling better than ever before, and is committed to continuing treatment for as long as necessary to maintain her total and complete sobriety."

This is the longest Mueller has ever stayed in an in-patient facility, after she checked in on December, 12, following an arrest for drug possession and assault in Aspen, Colorado.

The 34-year-old reality star is planning to continue an out-patient program for another 30-45 days in LA, which will help her transition back to a normal, drug-free life.

Mueller has also been receiving support from ex-hubby, Charlie Sheen, whose been helping take care of their two-and-a-half-year-old twins, Bob and Max, while mom's been away.

Welcome home Brooke!