Former pop star Sinitta, who once dated Simon, claims his relationship with Dannii has become so strained that she is in danger of being kicked off the show, reports the Daily Star.
Sinitta said: “It’s getting worse as the weeks go by. I sit behind them as the show is going out and you can feel the tension between them. When we go to the ads it gets worse.”
Dannii, 36, has been suggesting that music mogul Simon, 49, is getting too old for the talent search by mocking him for forgetting the acts’ names on the live show.
But Sinitta warned: “It’s backfiring in her face, Simon’s deliberately forgetting the name of her acts to undermine her. I wouldn’t be surprised if he pretends to forget her name this week!
Sinitta went on: “Dannii’s annoyed because last year Simon was all over her and this year he hardly notices she’s there.
“She’s been openly criticising him on live telly, which is definitely not a good idea.”