Sia discovers someone is trying to sell nude pictures of her - so decides to share one herself

• The notoriously private Australian singer-songwriter was praised by her fans following the sassy move
• The message underneath the photo reads: "If you make the purchase it will be unblurred and you will receive an additional 14 images."

Sia responded to finding out that someone was trying to sell naked pictures of her in the best way possible.

On Monday night, the singer-songwriter claimed someone was touting nude pictures of her online.

But beating them to it, the 41-year-old star decided to share the naked picture herself - and also promote her upcoming Christmas album at the same time.

“Somebody is apparently trying to sell naked photos of me to my fans,” she wrote on Twitter.

“Save your money, here it is for free. Everyday is Christmas!”

The photo shows the nude star - who usually keeps her face hidden behind outrageous wigs for privacy - with her back to camera standing on what appears to be a balcony.

It appears to be a paparazzi photo but the origin is unclear.

The message underneath the photo reads: "If you make the purchase it will be unblurred and you will receive an additional 14 images."

Her fans were soon flooding her social media channels with high praise.

"Sia is a legend," one simply commented," while another gushed, "Love you so much for this!"

A third wrote: "QUEEN! This is how you handle someone trying to leak or blackmail. Sia, you are iconic."

And another said: "AN ACTUAL LEGEND."

It's not the first time Sia has had a brush with controversy.

Back in 2015 she was forced to apologise for 'paedophilic' overtones in her Elastic Heart video, which showed 28-year-old Shia LaBeouf and 12-year-old dancer Maddie Ziegler grappling in an interpretive dance set in and around a cage.

Sia later took to Twitter to calm the storm it produced, telling followers: "I anticipated some 'pedophilia!!!' cries for this video. All I can say is Maddie and Shia are two of the only actors I felt could play these two warring 'Sia' self states."

She added: "I apologize to those who feel triggered by 'Elastic Heart.' My intention was to create some emotional content, not to upset anybody."