Justin Bieber fans can be seen getting emotional in a new promo video for the singer's upcoming Comedy Central Roast appearance.

The singer will be the subject of the network's latest Roast event, which mocks celebrity figures.

The show will be broadcast in the US on March 30 and a new advert video has been released.

It sees Beliebers 'crying' in front of the camera as they come to terms with Bieber's upcoming feature.

The likes of Snoop Dogg, Martha Stewart and Shaquille O'Neal meanwhile will 'roast' the singer.

Other stars on hand to mock the 21-year-old will include Ludacris and comedians Hannibal Buress and Chris D'Eli.

Kevin Hart will host the Roast.

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