Calum Best's 'sex tape' has reportedly leaked online as he appears on Celebrity Big Brother.
Calum has become the latest celeb to fall victim to a spate of celeb sex tapes, following X Factor singer Sam Callahan and comic Joel Dommett.
According to The Sun newspaper, the "nine-minute solo sex tape" was posted online this week.
It's said that the video, which doesn't feature any one else - is "several years old" and from a time when Calum was single.
A source told The Sun: “Calum was single at the time of the tape and was just having some private fun.
“He’s done absolutely nothing wrong and it’s a gross invasion of privacy for someone to put this on the internet for everyone to see.
“He clearly has nothing to be ashamed of but the person who leaked the video should be.”
Calum's 'sex tape' follows a similar clip that was posted online when comedian Joel Dommett appeared in the I'm A Celebrity jungle last year.
Joel previously spoke out about the video, saying he believed he was chatting with a girl he met online.
The funnyman told the Daily Mirror newspaper: "Someone messaged me on Twitter, they were very beautiful looking and we talked back and forth loads.
"I thought I was having Skype sex with somebody but it wasn't, it was just a video of somebody."
Joel explained to the tabloid that he had notified the police about the tape but they could not do anything.
"So basically somebody was watching me. It's the most disgusting thing," Joel said.
Meanwhile, chatting to the BBC, Joel admitted he had been "Internet Naive" after being tricked online by the unknown person.