Leelee's best movie?

I've become a bit of a fan of the talented & gorgeous Leelee Sobieski over the last year or so. Other movies I've seen of her's include The Glass house and Joy ride (aka Roadkill), but have only just got around to watching My first mister...which I really liked. I think it's Leelee's best performance yet - does anyone else agree, or can recommend an even better performance?

Dave