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Tuesday, December 1, 2015 12:00pm ET by  
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Sia and Jason Derulo to perform on X Factor semi-final

Sia and Jason Derulo have been confirmed to perform live on the X Factor this weekend.

The two acts will take to the stage on the show's result's programme on Sunday (December 6).

Sia will run through her single 'Alive', which is taken from her upcoming new album 'This Is Acting'.

Derulo meanwhile will perform 'Want To Want Me'.

The show's remaining finalists are Reggie 'N' Bollie, Louisa Johnson, Lauren Murray and Che Chesterman.

Johnson is the current favourite with the bookies.

Last year's winner was Ben Haenow, who released his self-titled debut album in November.

He beat off competition from runner-up Fleur East.

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Watch Sia and Derulo in action below:

 

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