Hussey was diagnosed with breast cancer in 2008. She underwent a double mastectomy as a result. In 2017, her cancer returned, and Hussey had to undergo chemotherapy and radiation treatment to remove a tumor that was located between her heart and lungs, according to The Independent.

Olivia Hussey Eisley, star of the 1968 film “Romeo and Juliet” and the slasher classic “Black Christmas,” has died, according to a post on her Instagram page. She was 73.

She also played Mary in the 1977 miniseries 'Jesus of Nazareth' and was memorable in 'Black Christmas' and 'Death on the Nile.'