People keep bringing up Harry Potter. Am I the only one who thinks that the casting didn't really work out all that well in those movies? Radcliffe looked old to me in Deathly Hollows Part Two. You probably could have told me he was twenty-seven, and I would have believed you. But in actuality he was 20-ish.
I mean, 16-year old Daniel Radcliffe:
Twenty-year old Daniel Radcliffe:
That seems like a big difference to me (but now I'm starting to think that might just be me). I still think he looks older than what he is even today. Doesn't help that he looks a lot like Elijah Wood whose nearly ten years older than him, but that's veering off-topic.
I guess what I'm trying to say is. Just because someone looks young at sixteen doesn't mean that they're going to stay young looking at twenty. "Aging into the part," doesn't always work so well.