X Factor finalists Union J could be Louis' very own One Direction.
Some were surprised when Union J were taken to the judges houses after they lost in a sing off to fellow boy band GMD3. But when Rough Copy were unable to fly to Vegas due to visa problems, Louis invited both Union J and Times Red to the swanky Las Vegas location.
Band members Jamie, Josh and Jaymi were orignally called Triple J but changed their name to Union J when solo singer George joined them in-between the boot camp and judges' houses rounds.
The now four piece boyband performed Carly Rae Jepsen's 'Call Me Maybe' to Louis and to Sharon who was the special guest judge, helping Louis make his choices.
Louis Walsh has already worked with boy-band mega stars Boyzone, Westlife and more recently JLS.
It looks like he could be looking for the next big boyband as he said on Sunday night's show: "The boys have a great young image, girls are going to love them, they have it all - great energy, looks and the vocals to match."
Union J already have the approval of One Direction's Liam, who congratulated them on Twitter writing "Yeyyyyy I really like Union J!!"
Union J replied with "@Louis_Tomlinson thanks mate means a lot JJx."
X Factor is on this Saturday evening on ITV1.