The X Factor is to have the glam factor when it returns for a new series later this year.

Singer Kelly Rowland, and Tulisa Contostavlos, of N-Dubz have joined the judging panel but there is no place for Cheryl Cole. Dannii Minogue, 39, had already left.

The new line-up for the competition also includes pop mogul Louis Walsh, the only surviving judge, along with singer Gary Barlow, from Take That.

But the announcement prompted shock from Cole fans and saw talent show guru Simon Cowell booed last night by the audience when he was judging on another ITV show, Britain's Got Talent.

Cowell appeared on stage hours after it was confirmed Cole would not be a judge on The X Factor after being dropped by the US version, allegedly because bosses could not understand her Geordie accent.

BGT hosts Ant and Dec teased Cowell, with Dec asking him whether he could understand his Geordie accent.

Cowell pretended not to know what Dec was referring to. He said: "Am I missing something here? I've just got back, what's been going on?"

The first audition for the eighth series of the show will be held in Birmingham on Wednesday, continuing to Glasgow, Manchester, Cardiff, London and Liverpool.

Meanwhile, the first two acts to make it through to Saturday's final of BGT have been chosen. Ronan Parke, 12, who won the public vote, will be joined by talented pianist Paul Gbegbaje.