One Tree Hill was a staple of the CW for years. Even though the show went off the air almost four years ago, the fandom is still strong. The cast recently reunited for EyeCon’s annual convention for the show, with Chad Michael Murray, James Lafferty, Bethany Joy Lenz, and more reuniting for three days of OTH nostalgia.

The biggest shocker of the event is Jackson Brundage, who played Haley and Nathan's son Jamie. He's 15 years old and all grown up, looking so different. Where did the time go?!

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Click through the gallery to see photos from their reunion. Let us know if you're shocked that he's grown up this much in the comments!

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