Robbie Williams will open the 'X Factor' with a greatest hits medley.

Robbie Williams

Robbie Williams

The 'Let Me Entertain You' hitmaker and talent show judge doesn't have any acts competing to win this weekend, but he will kick-start Saturday night's (01.12.18) live show with a performance flanked by the finalists.

As reported by The Sun newspaper's TV Bizarre column, Robbie and the 10 contestants will take to the stage to sing a mash-up featuring tracks like 'Rock DJ' and 'Freedom'.

An insider told the publication: "Fans have been gunning for Robbie to perform all series and that's finally going to happen.

"He's been a real highlight of this year's show and it was a real feat to get him as a judge, so the medley is going to be a celebration of that."

He will also be performing during the finale the following night as he rejoins his Take That bandmates - Gary Barlow, Mark Owen and Howard Donald - for highly anticipated reunion.

While Robbie's wife Ayda Field - who appeared on the panel alongside Simon Cowell and Louis Tomlinson - also doesn't have an act in the final, she has loved her experience on the show.

However, she admitted working with her husband hasn't taught her anything she didn't already know about her man.

She said: "Simon is even more competitive than you think and is a master of this job.

"Louis has a big heart and even bigger Instagram following. Robbie? I knew everything about him already."

'The X Factor' final airs over Saturday (01.12.18) and Sunday (02.12.18) at 7.30pm on ITV1.

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