Beliebers are taking to Twitter to praise the day that Justin Bieber made his YouTube debut with the hashtag #9YearsofKidRauhl.
The hashtag is a throwback reference to Bieber's YouTube channel, named after his dad's interest in a series of fantasy novels. Fans online are using this to commemorate his transformation from YouTube child sensation to thrill-seeking pop chart-topper.
Read a few of the Twitter reactions below. Revisit Justin's 2015 Billboard cover story here.
Check out more Justin Bieber in the gallery below!
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