WATCH: Sia Explains Her Wig During Car Karaoke With James Corden

Upstaging Adele is a hard thing to do, especially after she made such a show-stopping appearance on the Carpool Karaoke segment of The Late Late Show last month, but Australian singer-songwriter Sia just might have done it.

The bisexual songstress made a stop on her busy schedule to hitch a music-filled car ride on James Corden's late-night talk show, and although you couldn't see much of her face because of the oversized wig she was wearing, her fun, trademark vocals demanded to be heard.

Sia and Corden sang along in the car to some of her biggest hits like "Titanium," "Elastic Heart," and "Chandelier," and in between showing off the voice that made her a star, she answered some burning questions, like why she decided to wear big wigs during her public appearances.

"I don't wear this unless there's cameras around," she explained. "I only wear this to maintain a modicum of privacy."

Much to the pop star's approval, Corden then channeled his inner Sia and donned his own black-and-white wig.

Watch Sia's hilarious car ride with James Corden in the video below.