[Zac]

Madonna and Lady GaGa are in talks to appear on the forthcoming series of The X Factor, according to reports.

Rihanna has also apparently been approached about appearing on the talent contest, which gets under way later this year.

The trio would follow in the footsteps of such acts as Britney Spears, Beyonce and Take That, who have all mentored X Factor contestants in previous series.

"The last series proved anything is possible when Beyonce performed with (eventual winner) Alex,” a source told The Sun newspaper.

“The final got 15 million viewers and that is enough to entice the biggest stars on to our stage.

"This year is going to be bigger than ever – we are planning to get the best names in music. Madonna and Robbie would be sensational."

The 2009 series is due to begin on ITV in August.

Source: Entertainment Wise

Yay, I love them both, and Rihanna! I can't wait for these performances, especially Gaga's.

[Spike]

The show is only missing those big guest stars every week now
if this is true then it will make The X factor even better.

[LemonJam]

...and with that I'm not watching this years series.

[MR.K!]

Sounds good !

[Harry!]

OMG that would be fab, Madonna

[Zac]

I'm not sure about Madonna but Gaga will have a new single out by then, so hopefully she'll be able to perform Starstruk.

[Zac]

Originally posted by Harry.
OMG that would be fab, Madonna

She'll be touring the UK around then too, yeah?

[MrGaryy]

Britney hardly mentored the contestants.

so that would be Madonna, GaGa and CHristina all nest series!
rihanna can crawl back into her box tho kaitnx.

[Harry!]

Originally posted by Zac

She'll be touring the UK around then too, yeah?

No she would have finished her tour then. [October I guess X Factor live shows starts]