Sia Joins THE LATE LATE SHOW's James Corden For Some "Carpool Karaoke"

The fabulous Sia joins The Late Late Show host James Corden for some "Carpool Karaoke," and the results are big fun.

Corden, who finds himself lost on the way to work, sees Sia and realizes SHE is the perfect person to give him directions to work.

Along the way, Sia and Corden belt out some of her biggest hits like “Chandelier”, “Diamonds," “Elastic Heart”, “Alive”, and “Titanium.”

The awesome Aussie also explained the famously over-sized, face-obscuring wigs and hats: “I don’t wear this unless there’s cameras around. I only wear this to maintain a modicum of privacy.”

At one point Corden takes issue with Sia's diction while singing. And she just laughs LOL...

I love that I had the unexpected but fabulous experience of meeting Sia when she visited Las Vegas in March of last year. She came to see her idol, Olivia Newton-John, in concert and she came backstage for a spell. She was more than joyous, and very happy to take a pic with me. Like just about every Aussie I've ever met, she was full of life and completely down to earth.