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8 December 2011, 09:58
Gary Barlow is also expected to sing with Marcus Collins at Wembley Arena.
Tulisa Contostavlos and Kelly Rowland will perform with their own contestants at this weekend's The X Factor final, according to reports.
Bosses are said to have decided against the usual format of teaming up the finalists with special guests after Louis Walsh was left with no contestant in the last three.
The Daily Mirror reports that Tulisa will sing a mash-up of Alicia Keys songs, including 'Empire State Of Mind' with Little Mix, while Kelly and Amelia Lily will perform 'River Deep, Mountain High'.
Gary Barlow is apparently undecided about what he will perform with Marcus Collins.
This year's The X Factor final will take place at London's Wembley Arena for the first time.
Acts set to perform on the show include Coldplay, and One Direction and JLS, who will form a supergroup together for the first time.