During an appearance on ITV's Good Morning Britain, the popstar said she agreed with the bookies that Matt could be the one to go the distance.
Former waiter Matt, 23, is the bookies' favourite to nab the recording contract with Simon Cowell's label prize, after impressing the judges at each stage of the competition since his initial audition.
Fleur said: "I think that Matt Terry could win it. He's just so strong. He's just so polished from his first audition. He can do no wrong in my eyes. Amazing voice and amazing performer."
We're only going into the fourth live show this weekend, however, so there is a while to go yet before X Factor's 2016 winner is crowned.
Meanwhile, Fleur was – of course! – asked for her thoughts on this year's most talked about contestant, Honey G.
"I say Honey, you say G!" joked Fleur.
"Ultimately, she's entertaining everybody and that's why she's been kept in. She hasn't hit the bottom three once so she's doing something right. I think people jus t like to see what she's going to do every week."
"Fright Night will be interesting with her," added Fleur. "I don't know what to expect!"
Honey G will be tackling Will Smith's song 'Men In Black' for the Halloween special, which airs on Saturday night from 8pm on ITV.