She's famous for being camera shy.
But now Sia is hiding the faces of her dancers too.
The 41-year-old singer released a creepy new video for her single Never Give Up.
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In it, two children frantically search for each other in spooky abandoned train depot.
As is tradition, the youngsters each wear one of Sia's signature two-toned black and white wigs.
But in an extra unsettling twist, nether of the faces are visible; instead their entire heads beneath the wigs are covered in black masks, giving the impression they have no faces at all.
After finding each other, they hold hands and sprint through the deserted station together, without ever removing the masks.
A video posted by SIA (@siathisisacting) on
The song is from the soundtrack to Lion, starring Nicole Kidman and Dev Patel; with the theme of the video mirroring the plot of the film.
Based on the non-fiction book The Long Way Home, it tells the story of a man who searches for his family using Google Earth, having been separated from them at five years old.
Although fans can't tell for certain, neither actor seems to be Sia's talisman Maddie Ziegler, as they appear to younger than the now 14-year-old.
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The Dance Moms star has appeared in five of Sia's recent music videos The Greatest, Cheap Thrills and Big Girls Cry, as well as Elastic Heart opposite Shia LaBeouf and the award winning debut Chandelier.
She also tours with the Australian superstar and performs during live concerts, sometimes along with an array of famous actor guest performers, as the singer herself remains perfectly stationary.
This week Sia, whose full name is Sia Furler filed for divorce from her husband of two years, documentary filmmaker Erik Anders Lang.