Demi Lovato may soon have nude photos circulating of her on the Internet.

More than 20 sexually-explicit pictures of what appears to be the 20-year-old The X Factor judge were recently emailed to RadarOnline for purchase, but the website has chosen not to publish them.

The leaked photos have reportedly not been proven authentic but very closely resemble Lovato. A dark-haired woman was captured in poses such as lying naked in a bathtub and topless in bed, and the same tattoos Lovato has are showing -- including 12 black birds on her right forearm.

"These are Demi. The collection I have show some nude, including face, some including parts of the body Demi is known for -- tattoos, butt, chin. Then, I have pictures of her getting rowdy... I can guarantee you these photos are legitimately of Demi," the supplier of the photos told RadarOnline.

It remains unknown where the nude images came from and whether a computer or phone hacker is behind the scandal. Lovato and her representative declined comment on the X-rated photos.

The X Factor will debut its third season on September 11 on Fox.

Kelly Rowland and Paulina Rubio will be joining Lovato and Simon Cowell as mentors on the show.