Fears that Britney Spears and Demi Lovato will go into meltdown on Simon Cowell's new US X Factor
The 52-year-old even refers to his fellow judges as 'toys' - playthings he pits against each other, while he sits back to watch the ratings go through the roof.
Those close to both women have expressed fears that they risk further meltdowns as long hours and live shows take a toll.
Already Britney, 30, appears frazzled.
At the press launch on 14 May she had bloodied, bitten nails, suggesting she's under stress.
And it's been just two months since Demi, 19, admitted that her recovery from bulimia and self-harming was 'a daily battle'.
Read the full story about Simon Cowell in Now magazine dated 28 May 2012 - out now!