Sia is an Australian pop singer and songwriter who has a net worth of $20 million, according to Celebrity Net Worth. If there’s one thing Sia is known for other than her amazing vocals, it’s that she’s always hiding behind her extravagant wigs.

The 39-year-old singer covered her face, as usual, with a half black, half platinum blonde wig during an appearance on The Ellen DeGeneres Show on December 1.

While chatting with Ellen, Sia explains that she hides behind her wigs because she doesn’t want paparazzi to “get the perfect shot” when she’s just living life.

Naturally, host Ellen DeGeneres pushed her to show the viewers what’s under that fake hair. Ellen says that she’s seen her friend’s face, but she wants the world to see Sia’s natural beauty as well. She then encourages Sia to take off her wig for the cameras and studio audience

Unfortunately Ellen was unsuccessful in pulling the wig off, and Sia couldn’t help but crack up as the comedienne struggled to unpin the mask from her face. Eventually, holiday music began playing, totally startling Ellen, and even she had to let out a giggle as someone dressed as a reindeer interrupted everything going on.

Although Sia has posed for photos without her face covered before, but for the most part, she likes to remain a mystery when making public appearances.

At the end of the show, Sia performed her new song "Alive" with 'Dance Moms' star Maddie Ziegler.

Maddie may have finished her run in Sia's music video trilogy, but the 13-year-old dancer's work with the singer is far from over.

Maddie impressed once again while showing off her amazing skills. She pulled out all the stops in the emotionally charged choreography—twirls, flips, window smashing, and more.

“So this happened today….Always a great time performing with @Sia ! Love her and @TheEllenShow,” Maddie tweeted.