The 'What Makes You Beautiful' band, who were formed on the 2010 series of the UK show, will reportedly assist full-time panelist Ronan Keating on the upcoming contest.
One Direction perform live at Planet Hollywood Resort Casino for the Theatre of Performing Arts, Las Vegas.
A source told The Mirror: "Ronan was really keen on teaming up with the lads. Despite their age, they are in a great position to give help and support - they've been there and done it.
"They have already gone through the process and have even managed to break America."
Alicia Keys, Usher and Ke$ha have been invited to help remaining judges Mel B, Guy Sebastian and Natalie Bassingthwaighte.
