Robbie Williams is making an appearance on The X Factor final.
The star will sing with Olly Murs, 26, judge Simon Cowell confirmed yesterday.
Michael Buble is paired with Stacey Solomon, 19, and George Michael will duet with Joe McElderry, 18.
It is thought one finalist will leave the ITV show on Saturday.
For more X Factor news check out our sister site www.whatsontv.co.uk
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