Robbie tipped for 'X Factor' auditions

Robbie Williams and Ronan Keating are among stars being lined up as guest judges for The X Factor's forthcoming auditions, a report has claimed.

According to The Mirror, Simon Cowell also has Paula Abdul, Mel B and Charlotte Church in the frame to fill in for Dannii Minogue, who is not appearing at the auditions this year due to her pregnancy.

A source told the newspaper: "The stars would attend all the audition days in one city each. It would create an extra buzz and make the initial shows even more exciting.

"Simon thought it worked well on American Idol, so it is something he is willing to try."

Yesterday, a tabloid suggested that Cowell was also considering axing Minogue altogether. However, the popstar later told her Twitter followers that there was "no truth" in the claims.

The insider added: "It is difficult to know if Dannii wants a big role until after she has her baby. The situation could be up in the air a while yet."

A spokesperson for Cowell said: "He is incredibly supportive of Dannii."