In corporate New York and Wall Street, men are expected to wear dark business suits, conservative ties, and dress shoes with dark socks. Women wear business suits or conservative dresses and comfortable dress shoes with moderate heels and a bit of jewelry. So don t be surprised to see some very casual clothing on Friday, especially in the summer. In some smaller businesses, or creative arts and academic settings, men will feel comfortable in nice dark slacks and a tweed sports jacket, blazer or sweater. Ties are often optional, especially in hot weather.
Women wear skirts or slacks.
Professors and artists can dress more casually. In the autumn, winter and spring, men will usually feel comfortable with a suit, nice sports jacket or cashmere blazer with dark flannel slacks, and almost always a tie. Invitations to charitable events tend to be more dressy. In the summer outside, most men will feel at home with a nice lightweight blazer and sporty slacks. Women can wear lighter colors and cooler materials.