United Kingdom, May 26 -- Dame Julie Andrews has made a rare public appearance in a video for the World Parkinson's Congress.

The 90-year-old legend, who became a global star in the film world with her roles in the likes of Mary Poppins and The Sound of Music, appeared in a video message shared on YouTube by the World Parkinson Coalition, as they addressed attendees at the event and commented that she knows "well how devastating" the disease can be.

She said in the clip: "Good evening, everyone, I'm Julie Andrews and I'm pleased to welcome you to the seventh World Parkinson's Congress.

"Your participation is invaluable as we seek to find a cure to this terrible disease. I know well how devastating it can be.

"May we all become a beaco...