Intimate photos of The Voice Australia contestant Jack Vidgen have been shared to an online forum called "Large Penis Support Group", Daily Mail Australia reports.
Jack, 22 - who shot to fame as the winner of Australia's Got Talent when he was just 14-years-old - appears to have posted the sexually explicit images to his social media account last year, before he auditioned for the eighth season of The Voice.
WATCH this video to see Jack's new look - you''ll hardly recognise him!
The photos now circulating are screenshots of the originals which were posted to Jack's Instagram story.
Daily Mail reports other images are also being shared on the forum which are personal photos Jack sent to men through Instagram's direct message function.
In one screengrab taken from Jack's story, the singer poses naked with his back to the mirror, covering his posterior with a strategically placed 'FRIDAY' banner.
Another image from Jack's Instagram story shows him posing for a mirror selfie with a female friend.
Neither party are wearing any clothes below the waist to demonstrate their prominent tan lines.
Jack tagged his companion and captioned the shot: "Spent the day in the sun x"
Jack unveiled a dramatic new look when he returned to the spotlight on The Voice last month, sporting platinum blonde locks and surgically enhanced lips.
‘I’ve been trying to find myself again and I’ve definitely experimented with filler and whatever, and there’s no denying that. I think it’s pretty obvious,' the Sydney-based star said.
‘To me, lip filler is like makeup, it’s like doing your hair ... It’s not permanent. I’ve never had any kind of plastic surgery or anything like that. I think it’s each to their own, whatever makes you happy.
‘It’s such a small thing for me."