Georgina, who had a lifelong dream of having her music heard across the globe, was told that she had exhausted all treatment shortly before her 15th birthday last month.
And sadly, the young singer from Marske, who was wheeled onto the Riverside Stadium pitch last weekend while her song Two Thirds of a Piece was played to 14,000 fans, passed away at home.
Both Simon Cowell and Saltburn's own James Arthur have joined other celebrities in tweeting support for a song, sung by Georgina, which has just been released by Sony as a charity single.
Following news of her death, Cowell tweeted: "I just heard a very sad story about a brave girl called Georgina Anderson. You can buy her song on iTunes."
James dedicated his CiN performance to her.
Georgina's song, Two Thirds of a Piece, is currently number 24 in the iTunes chart.
And her version of Bonnie Raitt’s I Can’t Make You Love Me has had nearly 250,000 hits on YouTube after family and friends started a campaign to ensure it went viral.
Georgina previously said it was “amazing” that so many people had watched her video.
She told the Middlesbrough Evening Gazette: “Music is something I really enjoy, something that makes me a bit different.
"I’m so happy with how many people have already heard it."
Georgina was diagnosed with stage four liver cancer in July this year after going to the doctors with stomach pains.
It was at first thought that she might have been suffering from gall stones, but after a scan revealed a growth in her liver, they found she had an extremely rare and aggressive form of cancer which affects just 18 young people in the UK each year.
She underwent chemotherapy - bravely shaving her head when her hair began to fall out - but the disease spread to her lungs, and doctors later gave her and her family the devastating news that there was nothing more they could do.
Her dad Paul spoke of how cruel it was to have her chance at fame and stardom taken away, but said that she wanted to leave her song as a legacy.
He added the family received 'amazing' support after Georgina's diagnosis, and more than £7,000 had been raised for the Teenage Cancer Trust in her name.
You can listen to Georgina's version of I Can't Make You Love me here.