12!
Justin Bieber did not write the song "One Time" -- he sung it. He was 15 years old when the song was released.
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Justin bieber was 14
justin bieber will be 27 in 11 years
Justin bieber was 16 yeards old when he meet Selena Gomez , (Justin bieber and Selena Gomez is married together!)
Justin Bieber's girlfriend, Selena Gomez, is 20 years old (birthdate: July 22, 1992).
Justin Bieber was very young when he began to sing.