Simon Cowell was visibly stunned as teen was knocked out in the third live semi-final show this evening after pianist Tokio Myers and comedian Ned Woodman were sent through to the final.
Previously, she has been one of the favourites of the ITV show with backing from US star Jennifer Hudson.
They will be joining mind reading duo DNA, singer Kyle Tomlinson, Issy Simpson and comedy magician Matt Edwards.
As the credits rolled on the episode, the 56-year-old music mogul was seen going up on the stage to talk to the singer.
This evening saw performances from Josephine Lee, the London School of Bollywood, Jay Wynn, Martin & Faye and dancer David Geaney.
Once again, only two of the acts will go through to Saturday's final following a public vote with the results being revealed tonight.
It has been announced that this year’s Britain’s Got Talent finale has been moved from Sunday out of respect for an Ariana Grande concert to commemorate the victims of the Manchester bombing.
Golden Buzzer act Sarah Ikumu is set to perform on Britain's Got Talent
In a statement, an ITV spokesman said: “Ariana Grande’s One Love Manchester benefit concert is bringing artists and the public together, and will raise funds for the Red Cross’s Manchester Emergency Fund.”
“ITV and Britain’s Got Talent have no desire to distract from this important cause, so we have taken the decision to move the Britain’s Got Talent Final from Sunday night.”
We will be following all the action from the third semi-final show.
See below for all the live updates from tonight’s Britain's Got Talent semi-final on ITV.
10pm Tokio and Ned are now through but there is shock on the judging panel as Sarah goes out of the competition. Could she be back coming back at the wild card?
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9.58pm Ned Woodman, Sarah Ikumu and Tokio Myers are in the top three.
9.52pm David is sad that there is so much talent and that everyone can't go through. He says it's a tough call this evening.
9.43pm The muscial interlude has ended and the results will be revealed shortly…
Britain's Got Talent: Most memorable moments Mon, May 1, 2017
Britain's Got Talent: The best and worst moments from the ITV talent show.
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Dance act Just Us get the golden buzzer
9.36pm We're back for the results!
9pm The votes are now open!
8.40pm Tokio Myers has taken to the stage combining contemporary with classical piano. He is incredibly unique and Simon says it is his "time" to shine.
All four judges were on their feet as Ant and Dec tell him that he's changed the atmosphere in the room.
The Britain's Got Talent judging panel share their praise for the acts
8.35pm Tap dancer David Geaney gives an energetic performance that proves to be a captivating. The crowds love it as Amanda compares it to Game of Thrones crossed with Irish dancing.
"It's a great idea but the song is wrong for you," Simon tells him, suggesting he is a "better ideas person than a performer".
Clearly, Amanda is a big Game of Thrones fan as she corrects David's kestrel comment. She is not impressed at all, especially with Simon and his remarks.
8.25pm Golden Buzzer act Sarah Ikumu sings a soulful version of Prince's Purple Rain. She has the crowds going.
Simon says Sarah is "fearless" and is genuinely blown away by away by her. Amanda says she has too many words, including swear words, about how good Sarah was.
Sarah Ikumu impresses the Britain's Got Talent judges
8.19pm Singing and dancing robot Jay Wynn gives a rendition of Feeling Good in a surreal performance. But Amanda and Alesha buzz him out early on.
8.05pm Ned Woodman is back and looks like he is going to launch a bit of a savage attack on the judges again.
"I would never press my buzzer!" Amanda tells him after Ned hit her buzzer. Despite hitting back at the judging panel, they seem to be enjoying it.
After his savage performance has gone down a treat with the panel as they say that his second routine is better than his first.
8.00pm Father and daughter duo Martin & Faye take to the stage with an emotional performance.
Simon says that the song choice doesn't work, saying: "I think it was way too big for you. But in terms of the charming factor, I think you've got a shot because I think people are going to like you." Once again, the head judge is not holding back.
Amanda Holden gets savaged again on Britain's Got Talent
7.55pm "It's so important you're in these live shows," says Alesha.
"This is like my story, this is really beautiful and a celebration of what it is to be different," explained David.
Simon gives the dance a 10/10 in something of a surprise from the usually tough judge.
7.53pm They've gone for a Cinderella theme this time around with some beautiful staging full of colour.
7.48pm Next up to perform will the London School of Bollywood, who will be hoping their routine can win over viewers and judges alike.
7.38pm Magician Josephine Lee kicks of the show and her performance goes down a treat with David Walliams giving her standing ovation.
Alesha Dixon tells her: "I think you might give Issy a run for her money."
But Simon Cowell is not impressed with the "really annoying commentary" but enjoyed "the legs". The head judge tells her she hasn't quite mastered her showmanship. Unsurprisingly, he gets boos and jeers from the crowd.
The London School of Bollywood perform on Britain's Got Talent
7.30pm It's that time again! Britain's Got Talent kicks off its third semi-final live show.
7.33pm How did Dec just do that?
7.37pm The judges pay tribute to the Manchester bombing victims as they address the change of the date of the final.
"Who cares when the show goes it? We do care but not that much. We want as many people are possible to watch," says Simon as he hails ITV for their decision.
Britain’s Got Talent airs on ITV tomorrow at 7.30pm.