Now, Ronan looks completely different, with photos shared on his social media offering a peek into his life after stepping away from the spotlight, featuring nights out in London with friends and trips abroad.
However, scandal erupted before the semi-final when someone claiming to work for Simon Cowell's company Syco published a blog suggesting the competition was 'fixed' for Ronan to win.
The BGT supremo called in police over claims on the blog that Ronan had been "groomed" to win and labelled it a "smear campaign" against the talented singer.
At just 12-years-old, Ronan amazed then-judges Amanda Holden, Michael McIntyre, and Louis Walsh with an extraordinary performance of Feeling Good by Nina Simone.
Ronan himself blasted the "silly" allegations and BGT said they would not tolerate "unfounded claims" about the show.
