8:00 at ABC
baby
Justin Bieber was 14 years old.
he didn't sing in it :/
Cause he doesnt have many songs....
He performed it for the first time in the "Today show"
Justin Bieber was 9 years old when he sang one time that was the reason why him voice was so high. :)
12! Justin Bieber did not write the song "One Time" -- he sung it. He was 15 years old when the song was released.
About 37-38.
well maybe if u payed him!!
The girl as Justin's "love interest", Kristen Leanne Rodeheaver was 15 years old when she was in Justin Bieber's single One Time.
The girl was 16 years old i think when she was in One Time by Justin Bieber, I think now she is 17 not quite sure
14 years old.