Justin Bieber Stars In New The X Factor USA Trailer As LA Reid's Guest Mentor - Video

11 October 2012, 14:08

The 'Boyfriend' star tells the latest batch of contestants that "nothing is impossible" during his appearance.

Justin Bieber is seen advising the next generation of singers in the latest trailer for his appearance on The X Factor USA this week.

The 'As Long As You Love Me' singer joins manager Scooter Braun as judge LA Reid's guest mentors for the judges homes section of the competition this week on the FOX reality series, and promises they are looking for the "whole package".

"We're looking for the whole package," Justin says in the clip, and is also seen telling contestants: "They told me I was too young. You're never too old to too young.

"If you have the voice and the talent nothing's impossible."

Other guest mentor's on the show this week include Jonas Brothers star Nick Jonas, Latin music star Marc Anthony and The Voice UK judge will.i.am.

Check out a picture of Justin Bieber and Scooter Braun on The X Factor USA below (Credit: Twitter):

Justin Bieber on X Factor USA from Twitter

While out on tour this week Justin has revealed he had some "personal footage" stolen after a thief stole both his laptop and camera from a room backstage during his show in Washington State.

The 'Boyfriend' singer has also been the victim of a swatting prank 911 call this week after police were called out to his home in Los Angeles over a suspected gun attack.

Watch Justin Bieber doling out advice on The X Factor USA this week below:

Justin Bieber continues his 'Believe' world tour in Canada this weekend while his appearance on The X Factor USA also airs on FOX this week.

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