The 16-year-old singer took to the stage singing Take That's 'Rule the World' and wowed the judges.
Gary Barlow had nothing but praise for the singer, admitting that she had in fact sang the song better than he could.
He told Ella: "I've got to be honest there is nothing worse than someone singing my song 10 times better than me."
"Stunning...Oh my god 16-years-old, the feel, the way you sing, it is absolutely extraordinary."
[Related article: Nicole Scherzinger: I should've won an Emmy]
Now that's what we call a compliment.
Nicole Scherzinger, whose job it is to critique contestants, was left speechless after Ella's rendition.
She said: "There are no words you are stunning in every way…you are from another planet."
Hopefully she'll find some by next week otherwise Ella's going to have a rather silent reaction from Nicole throughout the series.
Mentor Tulisa simply said: "You show everyone how it is done…You nailed it."
And Louis Walsh, who usually makes outlandish comparisons in his compliments (mini Lenny Henry anyone?), gave Ella possibly the biggest compliment of the evening.
Louis told the 16-year-old that he hadn't seen a talent like hers on stage since Leona Lewis.
For now at least, The X Factor is Ella's to lose.