Leona Lewis will return to perform at The X Factor Grand Final on Sunday night.
The singer, who found worldwide fame after winning the contest in 2006, will perform live at the event in Wembley.
Leona told The Sun that she wants Liverpudlian singer Marcus Collins to win this year's contest.
She is quoted as saying: "I'm really looking forward to this weekend -- I'm rooting for Marcus.
"I love his voice and he's versatile.
"He puts 100 per cent into the big singing and dancing numbers but I saw one stripped-down performance of him just singing with the piano and it was really emotional. He can do it all."
She added: "Amelia Lily is good -- I like her, and love her hair. Her song choices are cool as well. She tends to go a bit left-field with them.
"It must have been quite difficult for her to come back to the show so far down the line but hopefully that means she's got the least to lose.
"Little Mix are good as well -- the girls are sweet and I don't think they're a conventional girl group.
"They're diverse and remind me of Sugababes when they first came out -- they feel very fresh."
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