Kylie Minogue made an unadvertised appearance on stage in London with fellow Aussie Nick Cave on Sunday night, where the duo performed their 1996 hit 'Where The Wild Roses Grow'. The performance was filmed for Cave's forthcoming documentary 20,000 Days on Earth. Cave and Kylie's mid-90's collaboration was credited by transforming Minogue's career from that of a bubble gum popstar to a credible musician.

The Cave documentary tells the story of Cave's 20,000th day on earth (as the title suggests) and is directed by Iain Forsyth and Jane Pollard.

Meanwhile, Kylie is poised to return to our TV screen next January when she joins will.i.am, Tom Jones and Ricky Wilson of the Kaiser Chiefs on the line-up for The Voice UK on BBC One.

Check out the fan footage of Cave and Kylie below. Why this person didn't rotate their camera, we have no idea...