It's a big day on "The Ellen DeGeneres Show" Tuesday (Dec. 1) -- Aussie singer Sia is going to remove her wig on television for the first time.

In the ramp-up to the big reveal, Sia talks about why she wears a wig for her public appearances. "It's just so I can go to Target and buy a hose if I want to. Or if I find myself in need of a restroom and I can't find out, I can go by the side of the road -- nobody would be following me with a camera, trying to get 'the shot,'" she says.

But DeGeneres says Sia is a good friend and she just wants everyone to celebrate her beautiful friend.

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"I said would you please, when you're performing, take your wig off and let people see you 'cause you're beautiful and I want people to see what you look like," says DeGeneres.

"I'll do it, I'm just working up to it, you know? I can do it, I can do it, I can do it," says the singer, as the talk show host helps her unpin her wig.

To see the big moment, tune into "Ellen" on Tuesday. Check your local listings for time and channel.

Posted by:Andrea Reiher

TV critic by way of law school, Andrea Reiher enjoys everything from highbrow drama to clever comedy to the best reality TV has to offer. Her TV heroes include CJ Cregg, Spencer Hastings, Diane Lockhart, Juliet O'Hara and Buffy Summers. TV words to live by: "I'm a slayer, ask me how."