Sia took a proactive approach on Monday after learning nude photos of herself were being sold.
The 41-year-old Australian singer took control of the situation by sharing a naked picture of herself, quipping that she was helping fans to 'save money'.
Addressing her three million Instagram followers, the Chandelier singer said: 'Someone is apparently trying to sell naked photos of me to my fans.Save your money, here it is for free,' she wrote, 'Everyday is Christmas!'