Rita Ora is to miss the 'X Factor's premiere.

Rita Ora

Rita Ora

The 'I Will Never Let You Down' hitmaker is currently on tour in the United States and the news of her no-show is said to have been a "real blow" for the team at ITV.

A source said: "It was a real blow. It is always a glitzy occasion and the stops have been pulled out as everyone wanted to celebrate the new judges.

"It won't have the same impact if one of them isn't there."

And whilst Rita will miss the premiere, the three other judges - Simon Cowell, Cheryl Fernandez-Versini and Nick Grimshaw - will make their appearance at the event in London on Wednesday (26.08.15).

However, a spokesperson for the talent show has insisted it was all organised before she signed up to be part of the judging panel.

They told The Sun on Sunday newspaper: "Rita is unable to attend the Press launch as she is on tour in the US, organised prior to signing up."

Meanwhile, Cheryl has been given an executive producer role on the ITV show.

She explained to the Daily Star on Sunday newspaper: "This year Simon wanted me more involved in the decision making. He wanted to know my ideas, what I thought, who I thought would be good."

"I get excited and blurt things out and then he'll say 'That's actually a really good idea. OK so tell us more. What do you think? What would you change?' And I'd just say, even if it's stuff he thinks is absolutely ridiculous.

"We have creative moments together. We work really well off camera, just him and me in a meeting. So I've a few ideas for this year."