Teen star Justin Beiber has been accused of displaying diva like demands while aboard an American Airlines flight.

He had refused to take his seat while en route to Asia. Apparently he had also refused to sign an autograph for the Captian of the plane.

"He...gave the staff a really hard time the whole flight, nobody could believe it," a source said.

The Baby Hitmaker is not new to these bad behaviour allegations. He was said to be acting like a child by an airhostess on a flight from Sydney to Melbuorne this May.

Beiber is said to be very immature. There are rifts in his relationship with Selena Gomez because of this very reason.

She is growing mature by the day while Beiber still is the same. Gomez seems to be getting really pissed with his boyish pranks and attitude.

Beiber on the other hand denied these allegations saying "I have no clue. I have never heard that rumor".

"I don't think you should believe everything you hear. People make up stuff all the time,"  he added.