Olivia with Dyan Cannon
The joke's on you: Dyan Cannon, left, and Olivia Newton-John share a laugh during Wednesday's Hollywood premiere of HBO World Stage: Newton-John in Australia.
The one-hour special, which will debut on HBO on July 30, is a musical postcard of Newton-John's homeland highlighted by new songs from her latest album, The Rumour.
More from Olivia's Down Under TV special.