'Jerry Maguire' Star Jonathan Lipnicki Is All Grown Up - And Seriously Buff (PHOTOS)
Fifteen years later, Jonathan, now 21, has spent less time acting and more time becoming a martial arts expert - and he's got the body to prove it.
What was once the kid who wore glasses, starred alongside A-lister Tom Cruise and sprouted such facts as "The human head weighs eight pounds" is now a grown-up adult with a six-pack and tattoos - a transformation so surprising, we can't help but feel a little old.
What do you think of Jonathan's new look? Check out photos of the shirtless actor in our gallery above, then post your thoughts in the comments.