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12!
Justin Bieber did not write the song "One Time" -- he sung it. He was 15 years old when the song was released.
What else can I help you with?
How old was Justin Bieber when he had his 1st hit?
Justin bieber was 14
How old will justin bieber be in 11 Years?
justin bieber will be 27 in 11 years
How old was Selena Gomez when she meet Justin bieber?
Justin bieber was 16 yeards old when he meet Selena Gomez , (Justin bieber and Selena Gomez is married together!)
How old is Justin Bieber's girlfriend?
Justin Bieber's girlfriend, Selena Gomez, is 20 years old (birthdate: July 22, 1992).
How old was Justin Bieber when he first became a siner?
Justin Bieber was very young when he began to sing.
How old was Justin Bieber when he sang cry you a river by Justin Timberlake?
he was 12 when he sang cry you a river by Justin Timberlake
He was 13 years old when he sang by Usher?
Justin Bieber
How old was Justin Bieber when he sang With You?
Justin Bieber started singing At age three. Started carreer at age 12.
How old was Justin Bieber when he singed one time?
Justin Bieber was 9 years old when he sang one time that was the reason why him voice was so high. :)
How old was Justin bieber when he sang?
he started around the age of 12 or 13
How old was Justin Bieber when he sang You Smile?
He was 12 or 13 i think he was 13 though :)
How old is j smith the little boy who sang a song with justin bieber?
14
How old was Justin Bieber when he first sang one less lonely girl?
16, i believe (:
What song did Justin Bieber perform in US President Barack Obama?
Justin Bieber was 15 years old when he sang for President Barack Obama.
Did Justin Bieber wrote this song you got it bad?
No. The song was written by Usher and is actually very old. Justin Bieber sang it to Usher during the time he was getting signed on to become a pop star.
How old was Justin Bieber when he sang best friend?
First of all, its Justin Bieber.Second, he doesn`t have a song called Best Friend.Love, Love, Love
How old was Justin Bieber when he did one time?
Justin Bieber was 14 years old.
