Whitney Houston recently checked into an out-patient rehabilitation program. However, sources say the program isn’t drug or alcohol related.

UPDATE: One of Whitney’s reps tells TMZ that the rehab program is part of a “long-standing” recovery process for her drug and alcohol problem.

A source tells TMZ that Houston checked into the program ten days ago.  The program allows Houston to be out in public as long as she has a monitor with her.

The source tells TMZ that Houston is “cleansing herself to get ready for a new movie.”

Could it be the Waiting To Exhale sequel, Getting To Happy?

Just Friday night, Houston stopped by the Los Angeles Forum to check out a Prince concert.  Houston hopped on stage and sang with Chaka Khan and Prince.

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