The singer Whitney Houston, 47, who has struggled with substance abuse in the past, entered an outpatient treatment program, it was reported in May.

“Whitney Houston is currently in an out-patient rehab program for drug and alcohol treatment,” her rep said in a statement. “Whitney voluntarily entered the program to support her long-standing recovery process.”

Houston first entered rehab in 2004, telling ABC News interviewer Diane Sawyer at the time: “I partied a lot. Trust me: I partied my tail off.” But, the singer also admitted, “You get to a point where you know the party’s over.”