BRITAIN'S Got Talent fans slam Alesha Dixon and say she 'shouldn't be a judge' on the show.
Alesha, 45, has been on the panel since 2012 and recently dropped a new single.
She is joined every week by Simon Cowell, Amanda Holden and Bruno Tonioli.
However, she's been accused of having a "game plan".
"Alesha Dixon should not be a bgt judge. She doesn’t vote for the best act she just votes for the act Bruno does not vote for because she doesn’t want to vote for the best act. She’s done it all week," one viewer wrote.
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Alesha performed her new single as the semi-finals drew to a close, but she was left red-faced after the 'live' performance was exposed as being fake.
Magician Trixy left the singer red-faced as he revealed that Alesha's performance had already taken place and had been pre-recorded.
Trixy let the secret slip while performing a magic trick using the calculator on his mobile phone.
Speaking to the judge, he said: "Alesha, loved your performance by the way."
The star awkwardly replied "thank you", before giggling nervously.
The blunder didn't go unnoticed among viewers of the ITV show at home.
Writing on X, formerly known as Twitter, one fan said: "So Alesha ain’t performing live then."
Another added: "The magician giving away that Alesha has pre-recorded her performance!"
A third said: "Anyone else notice that he gave the game away and said great performance Alesha…. Guessing #BGT did a little bit of early filming…."
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And a fourth chimed in: "Did we miss Alesha’s performance?"
Someone else even joked: "I wondered if he was trying to show he could see into the future But maybe not..."
Alesha was seen singing her new single Ransom after all eight acts on Friday night had performed - some 80 minutes later.
As the show went to an advert break minutes beforehand, host Ant McPartlin said: "We'll be right back wth an exclusive performance from our very own Alesha Dixon!"
She then burst onto the stage in a black glittery outfit - having previously been seen in a lime green dress - before singing and rapping her heart out.
Once finished, Ant told Alesha she had "better go and get changed".
He and his co-host Declan Donnelly then made their way down to the judging table before asking the three remaining judges which finalists they thought had performed well.
With Alesha's seat empty, Simon Cowell replied: "First of all, I've got to talk about that performance by Alesha.
"That was seriously seriously good. I'm blown away and good for you, Alesha. That was really really good."
After another ad break, Alesha reemerged in her lime green dress.
