Sia isn’t covering up this outrageous violation of privacy.

The Australian singer-songwriter, who rarely goes out in public without a massive wig concealing her face, felt forced to bare her body after she learned that the paparazzi were selling nude pictures taken of her on vacation.

Instead, she decided to beat the exploiters to the punch by sharing the image for free, hopefully preventing them from profiting off of her privates.

“Someone is apparently trying to sell naked photos of me to my fans. Save your money, here it is for free. Everyday is Christmas!” she wrote on Twitter, posting the pic of her bare bum.

But it couldn’t have been an easy decision for the famously concealed “Chandelier” singer, who many fans wouldn’t recognize on the street without her signature hair mask. Sia explained to the “Late Late Show” host James Corden that the wigs distance her true self from her celebrity, and help her to avoid the harsh criticism stars get constantly for their appearance. They also allow her to go to Target without getting ambushed by paps who might not know her without the wig.

In the U.S., celebrities can potentially sue any party who profits off of illegally obtained images of themselves. Those who distribute private pictures, whether for profit or not, can also be subjected to a legal order stopping the circulation of the personal photos, and forcing them to delete existing images.

Among celebs who’ve asked courts to protect them is sportscaster Erin Andrews, who won a $55 million lawsuit after a man leaked footage of her changing in the nude inside her Marriott hotel room in 2008. The man – who requested a hotel room next door to her to secretly film her – was also sentenced to 2 ½ years in jail.

The Duke and Duchess of Cambridge received damages after topless photos of Kate Middleton surfaced last year. A French judge ordered Closer magazine, which had published the photos, to pay $119,000 in damages, and slapped the editor and magazine owner with $53,000 in fines apiece. And over the summer, Olympic skier Lindsey Vonn threatened to sue  after her personal cell phone was hacked and intimate photos of herself and ex-boyfriend Tiger Woods were revealed.

But it’s tricky for stars who might want to press charges against those selling these violating photos, because it’s often difficult for them to track down the photo hackers. More than 100 high profile stars, including Kate Upton, Kirsten Dunst and Ariana Grande, were victims of the massive nude photo leak in 2014 for example, but it’s still unclear how many of the photos were real. It’s  also still unclear who hacked them.

Sia isn’t the only star speaking out against this. When Jennifer Lawrence’s Apple iCloud account was hacked and her private photos leaked in 2014, the “Mother” star called it a sex crime.

“Just because I’m a public figure, just because I’m an actress, does not mean that I asked for this,” she said. “It does not mean that it comes with the territory…It’s my body and it should be my choice. And the fact that it is not my choice is absolutely disgusting. I can’t believe that we even live in that kind of world. It is not a scandal. It is a sex crime. It is a sexual violation. It’s disgusting. The law needs to be changed, and we need to change.”

Moving forward, entertainment lawyers are working to get hackers and those who leak private photos prosecuted. However, no new laws have been implemented.