Cooler Than Me singer Mike Posner needs a disguise

US star Mike Posner, who sings the hit Cooler Than Me, is now so popular in the States, than he needs a disguise.

"I just wear really baggy stuff with hoods and sunglasses that people wouldn't expect me to wear," the singer said.

The overnight success recorded his songs alone in his room at university and uploaded them online for free before record executives tracked him down.

Cooler Than Me was chosen by X Factor favourite Cher as her song at the judges houses stage of auditions.

However she was unable to finish it after being overcome by emotions.