Happy birthday, Harry Styles! After watching him grow from his humble beginnings as an X Factor contestant, it feels as if we’ve known the One Direction star our whole lives!

We still can’t believe how quickly time flew, but since today is his 23rd birthday, we thought we’d celebrate by taking a little walk down memory lane. After all, who wouldn't want to see Harry grow up right before their eyes?

Click through the gallery to see Harry's transformation over the years!

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