I assume rhianna is involved paring her with jahmene would be embarrassing on so many levels.

I assume one direction will appear sadly

One Direction, Rihanna and Emeli Sande are performing but there have been no reports on them duetting with the finalists.

Only Boys Allowed are performing too!

Didn't they perform last night?

Kelly Clarkson, Rita Ora and Kylie performed last night.

They performed with Jahmene didn't they?

I think it would be much more TV if they had the contestants draw their duet out of a bag.