The Essex girl wowed Simon Cowell and co. with her killer vocals last week, taking to the stage with her rendition of Michael Jackson track Who's Loving You.
Before kicking off her performance, Cheryl Fernandez-Versini even told the reality TV hopeful to "breathe", appearing to coach her on nerves as ITV painted the picture of an amateur.
Louisa's mum also appeared on screen, saying her daughter sings "in the shower, in the bathroom" as if she had never seen a stage before.
Yet for a 'novice' singing contest, the 17-year-old seems to have a rather colourful CV.
Not only has Louisa accrued a rather impressive 11k followers on Twitter and built a 9,000-strong Instagram army, but she has already released a music video.