Korine was 23 when his screenplay he'd written for the film Kids was released as a feature film in '95. Chloe Sevigny, who played the leading role in the film, was 17. The two apparently met by chance in Washington Square Park in NYC when she was still in high school. "The two became close friends which resulted in her being cast in the low-budget independant film Kids."
Filter magazine has a cool recent interview with Korine here.