Sia shares nude photo of herself to stop the paparazzi from selling it

WARNING: Contains nudity.

Sia is one celebrity you don't want to mess with!

Instead of letting herself get caught up in a scandal, like a true boss, the notoriously private singer shared a nude photograph of herself after discovering that someone was trying to sell the image.

The image is watermarked “Client Preview” and showed Sia's nude backside.

The seller’s offer promised an "additional 14 unblurred images.”

"Someone is apparently trying to sell naked photos of me to my fans," the 41-year-old tweeted. "Save your money, here it is for free. Everyday is Christmas!"

Everyday Is Christmas is the title of Sia’s upcoming holiday album - so we love that she's using the phrase as a double entendre to attack trolls.