Teenager Sarah stunned on BGT at this year's auditions, closing the very first round of try outs for the new series.
Currently living with her mum and dad Alex in Milton Keynes, schoolgirl Sarah belted out “And I Am Telling You” for the judges from the musical Dreamgirls.
After singing, Sarah had all four judges and the entire live audience up on their feet - before Simon Cowell hit the golden buzzer.
He said: "I've heard this song a lot and it started off really well and then it's like you became possessed halfway through.
"It was quite incredible and for someone of your age to stand on that stage with all the nerves and pressure to absolutely nail the song but you made it your song."
Finally, Simon concluded: "Most importantly, enjoy this, I'm thrilled for you and your family."
It's now been revealed that Sarah was invited to audition for the show after being scouted last year.
“She auditioned shortly after, and of course completely blew the producers away. There was no special treatment and she had to audition like every other act from then on," a source told The Sun newspaper.
They added: "Simon Cowell had no idea who Sarah was when she first stepped on stage, the scouts worked completely separately, and he was unaware of her and her history.”
A spokesperson for the show commented: “As the only show of its kind in the country, we want to showcase the best talent around and therefore, we travel the length and breadth of the country to find the best talent and make them aware of the show and auditions.
“We do then encourage acts to apply but any such acts will be required to audition on the same basis as any other applicant and normal programme rules apply. All acts are judged on their performance during their audition.”
Speaking earlier in the year, Britain's Got Talent bosses confessed they were finding it harder and harder to discover new acts for the show.
Series producer Charlie Irwin admitted back in January: “When we started, tens of thousands of people applied. But numbers have dropped, so we have had to evolve the way we find people...
“We have to make the show more accessible now. We have to go to people to encourage them to audition. A lot of the time people won’t come to us anymore. We need to go everywhere in the UK to encourage people to audition.
Speaking to the Daily Star on Sunday newspaper, executive producer Clair Breen added: “The office scours the internet and we have regional teams who spend weeks researching that area, contacting dance schools, music schools and agents to find out about events there before going out to visit these people.
“We are just expanding the search and making us more accessible. It is hard. You are constantly pushing for better and better and you have to push the level higher every year and it is tough.”
Britain's Got Talent 2017 continues live this evening at 7:30PM on ITV.
The results follow at 9:30PM where two more acts will make the final this Saturday night.