Sia offered her social media followers a very Cheap Thrill — a nude picture of herself at no cost — that she says someone was trying to sell. 

Monday evening, the singer and My Little Pony: The Movie voice actor uploaded a screenshot of her bare lady humps to her Twitter and Instagram accounts. The NSFW, rear-exposing image does not show Sia's face and has the text "CLIENT PREVIEW" written across it. Below the image, text included in the screenshot promises an "additional 14 images" with one's purchase.

But in a move to keep others from profiting from her bare form, Sia decided to share a photo herself. 

"Someone is apparently trying to sell naked photos of me to my fans," Sia wrote in her social media posts. "Save your money, here it is for free. Everyday is Christmas!"

Yes, Sia took the opportunity to promote her holiday album titled Everyday is Christmas (out Nov. 17).

And with that we bow to "the greatest alive."

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