After revealing she was facing her third bout of breast cancer, in 2017 it was reported the cancer had spread to her bones and was at Stage IV, the highest level.
The star says she uses medicinal cannabis and oils extracted from the plant to help her manage her pain.
In the new video, Olivia goes on to thank choreographer Kenny Ortega, plus John Farrah and ELO’s Jeff Lynn for “writing such incredible songs.”
She adds: “I also have to say thank you to Matt Lattanzi, because without meeting Matt on set I wouldn’t have my beautiful daughter Chloe.
So I have a lot to be grateful for in life and particularly my daughter.”