Rihanna and Kylie Minogue join One Direction for the X Factor final, what would Dannii say?

Next weekend will be the grand finale of this year's X Factor.

Rihanna can't contain her excitment for One Direction, Kylie plays it cool. Copyright [Wenn]

And if seeing Christopher Maloney perform to 12,000 fans at Manchester Central Arena wasn't exciting enough, show bosses have now booked two of the biggest names in music to appear on stage.

Rihanna will be returning to the show after her somewhat damp performance of 'Diamonds' last week.

FYI: For those of you who didn't see it Rihanna caused the studio to rain, her performance was far from a damp squib.

Also returning to the X Factor will be Kylie Minogue.

Now the last time Kylie appeared on the show sister Dannii was a part of the panel.

[Related Story: Angry Rihanna so ill that she can't get out of bed (something to do with the X Factor rain?)]

[Related Story: X Factor: Union J leave the competition, Christopher Maloney makes it through to the final]

However, after Danni left in 2010 Kylie hasn't been on the show since.

And for good reason.

After revelations made by Simon Cowell about his secret relationship with Danni during her first series, Kylie Minogue vowed to never appear on the X Factor again in a show of sisterly solidarity.

Well she seems to have changed her tune.

Still, she's got albums to sell and it is nearly Christmas.

The final three will be perfroming with their mentors, clearly they'd prefer Dermot. Copyright [Rex]

Kylie Minogue and Rihanna are latest big names to join the final billing which also includes X Factor heroes One Direction and Emeli Sandé

The X Factor recently confirmed that James Arthur and Jahmene Douglas will both be duetting with mentor Nicole Scherzinger on the final while Christopher Maloney will be singing with his mentor Gary Barlow.

Talk about pulling the short straw.

Sorry Gaz.