Week 4
Robbie Williams and Fun (confirmed)

Week 5
Rita Ora and No Doubt (confirmed) One Direction (rumoured)

Week 6
Little Mix (rumoured)

Week 7
Olly (confirmed)

Week 8
Tulisa (confirmed)

All you need to check is an act with a single out soon, on that week and there you have it, I think rihanna is a definate , Bruno mars the same week as tulisa

Ohmygodilovenodoubt

Sorry I just love them

No Misha next week?

Only them idiots could appear on week 5, as week 5 is a shock elimination, so makes sense to have an autotuned act that shocked the world, by lasting as long as they have done.

I wonder if Emeli Sande will perform once again this year on The X Factor?

It would be great to see her perform the Naughty Boy song 'Wonder' which she features on and is currently in the charts.

I would love Emeli to perform again, but I doubt she will.

I wonder if Maroon 5 will perform. Adam is on The Voice, but they're huge in the UK atm, and have a new single to promote.

Are you sure 1D is not performing the same week as Little Mix? Surely they can't fit 3 performances in one night?

They have numerous times in the past. Not sure why you think they couldn't considering the amount of filler on Sundays.

I think Rihanna will be week 6 and Alicia Keys week 7

Rihanna is a must.

I'd like Christina Aguilera to perform, but I seriously doubt that'll happen.

Alicia Keys would be great.

MIsha said on twitter that she has big news that she is revealing soon so it might be she is performing soon it could be something else though.

I'm in Ireland at the moment and someone who was at the studios yesterday said on the radio that 1D are on tonight?

Gary sent tweet earlier and he was asked is his dog cookie going studio with him he said'no my daughers #1d.'I suppose we will find out after, they have new single out tomorrow?