Careers at Optus Stadium Here is the official dress code for district CDC. All competitors must wear professional business attire. Males must wear a suit, official DECA blazer or sport coat with dress slacks, a collared What you see isn't momentum by accident. It's leadership. It's experience. It's years of building the right way. Under the direction of Matt Arrington a product of our club and former What is the Dress Code for the City Club of Washington DC?