Olivia Newton-John (Photo: Neil Mockford)Olivia Newton-John is stepping down from show business for the time being--but stepping up to support her sister, whom she revealed this week has cancer of the brain.
The 64-year-old Newton-John, herself a survivor (she was diagnosed with breast cancer nearly two decades ago), put recent plans to headline Las Vegas's Flamingo Hotel on hold when she heard that older sister Rona, 69, had the disease.
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