Some Like Look of NBA dress code volume 8, issue 22 by Michelle Mattis

A dress code hasnt been approved yet for the NBA but there is a lot of support for this idea. Antonio Davis the President of national basketball players association favors the dress code to go along with the image related elements players affirmed with the collective bargaining agreement.
The dress code requires the players to wear sport coat, slacks and dress shoes when arriving at a game and when not in uniform on or off the court, collared shirt or turtleneck with slacks or Khakis.
jeans, sneakers, hats or shorts would not be premitted but there may be exceptions for basketball clinics.
The image related elements include:mandatory player attendance at team held media seminars and business seminars, if they do not attend they receive a 20,000 dollar fine.
no firearms when traveling on behalf of the league, any violation, suspension and fine of 50,000
Players are responsible for 12 court appearances this season, two for season ticket holders and five group appearances.

It would be nice to see the NBA athletes dressed to travel and on the sidelines. They are professionals and they should dress like professionals if they are not going to be playing in the game. I do agree that they should be allowed to dress in whatever for basketball clinics.