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Starstruck 1D Niall poses for snap with 'man crush' Buble

It was Niall Horan's turn to become starstruck when he bumped into Michael Buble at an airport.

The One Direction singer was completely taken aback when he to met one of his idols and quickly grabbed the opportunity to pose for a photo with the Canadian crooner.

The Mullingar star had arrived in Los Angeles for a series of appearances to promote the group's latest album Take Me Home.

The boys flew into LA to guest on the X Factor and the Ellen DeGeneres Show. Niall has made no secret of his love for Buble, saying while he was a contestant on the X Factor two years ago, that he has all of his music on his iPod.

"Look who I met in the airport yesterday! @michaelbuble," he tweeted. "I have a man crush on Michael Buble, he's the man! He's all I have on my iPod."

While the group had just arrived in LA, Michael was heading off to Milan for appearances at Fashion Week. 1D's second album is released on Monday.