The 18-year-old hasn't really featured all too much in the show up until now, but it seems that the judges' saw something in the youngster.
Groups mentor Louis Walsh revealed yesterday that he felt Triple J would benefit by having a fourth member and he asked George Shelley - who was axed at bootcamp - if he’d like to join JJ, Josh and Jaymi in the band.
On George joining the group, Louis said: "George loved the idea and as the boys knew him from Bootcamp they were really happy for him to join them. The group then came up with a new name and they are now called Union J."
Union J added: "We couldn’t believe it when we got the call about going to Judges Houses and of course we jumped at the chance. It’s a once in a lifetime opportunity. We’re so happy to be a four piece too. The group feels so right together, it feels like we’ve been together for years!"
Teenager George originally wowed at the judges at his audition with a unique cover of Britney Spears track Toxic.
Watch George Shelley's audition below...