Olivia Newton-John dead at 73

Singer and actress Olivia Newton-John died on Monday at her Southern California ranch at the age of 73, her family announced.

"Olivia has been a symbol of triumphs and hope for over 30 years sharing her journey with breast cancer. Her healing inspiration and pioneering experience with plant medicine continues with the Olivia Newton-John Foundation Fund, dedicated to researching plant medicine and cancer. In lieu of flowers, the family asks that any donations be made in her memory to the Olivia Newton-John Foundation Fund," her husband John Easterling wrote on Facebook. 

Newton-John is known for her role starring in "Grease." The four-time Grammy Award winner also starred in Xanadu.

She was born in Cambridge, England, in 1948, and her family moved to Melbourne, Australia, when she was six.