Their catfight reached boiling point when Nicki Minaj was caught on camera hurling a torrent of abuse at fellow American Idol judge Mariah Carey.

And, with Mariah said to be in fear of her safety on the show, it has emerged that Nicki was ‘supremely disrespectful’ to Mariah two years before she exploded on the Idol set earlier this week.

According to TMZ, Nicki was allegedly ‘rude’ to Mariah on the set of the music video Up Out My Face back in 2010.
The video shows Mariah and Nicki happily performing the song together, dressed in identical nurses outfits and red dresses, giggling away and drinking champagne.

But it was a different story off set, according to TMZ, with B.Scott, who appeared alongside Mariah in the video, alleging that: ‘Nicki was making faces at her [Mariah] laced with rude comments under her breath.

‘Mariah went out of her way to be nice to Nicki and make her comfortable,’ Scott added, with the website reporting that Mariah felt like she was helping launch Nicki’s career by appearing in the video.

TMZ claims Scott told Mariah what was going on with the Super Bass singer, but says ‘Mariah decided not to confront Nicki and acted as if nothing had happened.’

However, a source close to Nicki said: ‘Scott works as Mariah’s stunt double and of course he would say things like that. He’s worked for her for years.’Meanwhile, Scott told the website that he stays in touch with Mariah and spoke with her on Thursday night.He said that Mariah ‘wants to bury the hatchet with Nicki on American Idol and focus on the contestants.’

Meanwhile, former Idol judge Steven Tyler seemed a little sceptical about the row when a TMZ cameraman caught him outside an LA restaurant last night and asked him if the Mariah, Nicki feud was ‘bs’.

‘Of course, are you kidding?’ he replied. Earlier this week, it was reported that Mariah Carey was keen to hire extra security after Nicki apparently threatened to shoot her.

Ashton Tyler | Elite.