Okay guys, I need some help. I have a character that uses Ewan McGregor as a "face claim." It's... long and complicated. Anyway. I'm aging him down from his mid thirties, to fifteen. I need someone young and "hip" to play him now. Any ideas on who looks like him, but is twenty five or under?

Also, if someone can suggest an actor that looks like Adrien Brody, but again younger, that'd be nice too.