Olivia Newton-John Dead at 73: John Travolta, Julianne Hough and More Pay Tribute

Olivia Newton-John’s Daughter Chloe Lattanzi Mourns Mom With Sweet Photos After Tragic Death

Mariah Carey Remembers 'Lovely' Olivia Newton-John: 'She Will Be Missed'

Olivia Newton-John’s Top 20 Biggest Billboard Hits