The veteran entertainer is getting treatment for a substance abuse issue at a Malibu facility, according to

Her representative has confirmed the news, insisting the Cabaret star is making "excellent progress".

Her rep adds, "Liza has valiantly battled substance abuse over the years."

Minnelli has struggled with alcoholism and was once addicted to prescription drugs. She famously checked into the Betty Ford Clinic in California in the mid-1980s.