Underage in 'Another Day in Paradise'?
I haven't seen the movie (which debuted at a film festival in May 1997 when Vincent was barely 18), but it's been said they had to cut one of "two explicit sex scenes" between Kartheiser and Natasha Gregson Wagner to get an R rather than an NC-17. Larry Clark does get very young (often underage) actors in controversial roles, but it seems like there was no controversy over Vincent's age here.
"Live on, love all, and let live" - River Phoenix.