Adding to this intelligent person's thoughts, look at the other law students around you as well. A black suit doesn't work for someone who doesn't know how to wear a suit well. Half of your competition will show up in something cheap with a flamboyantly colored shirt (usually some horrible turquoise) and a black tie, or they'll be dressed like they did at their bar mitzvah in a navy 3 button suit (sometimes with fucking gold buttons) without an underlying, subtle pattern, a white button down, and a red or yellow conservative patterned tie more suitable for a fraternity pledge welcome mixer than a law interview. If you look good dressed up a bit more, if you can pull off a contemporary look, do it. The confidence you feel from looking good, as opposed to looking generic, will give you more than enough of a boost to get past the status quo. Set yourself apart by being you, and being comfortable with yourself.