Geordie Cheryl's invite to the Hollywood event was withdrawn after she was dropped from the US X Factor.
An insider told British newspaper the News of the World that celebrity chef Gordon Ramsay has been given the Promise This singer's ticket for the bash.
A source told the publication: 'It's yet another blow for Cheryl and the last thing she needs at the moment.
'The whole of Hollywood wants an invite to this dinner. But without X Factor there is no reason for her to go.
'It would have been the event where she shone with all America looking.'
It was said that Cole, 27, would have been on a table with Peter Rice, chairman of Fox Broadcasting and was to meet the royal couple.
The source added: 'The idea was to promote Cheryl as the biggest star in Britain other than Kate.'