I have a national conference coming up and I can't figure out what to wear. It's a professional meeting that occurs annually. In the past, I presented at these meetings so typically wore a suit. This time, I'm not presenting (which makes it more fun) but am at a loss as to what is appropriate attire. I'm going to be there for 3 days. Should I wear a dress shirt, slacks and tie? Would I need to wear a blazer with this? Would a blazer, white shirt, and nondistressed jeans look too casual? Also, what color blazer is appropriate? I'm assuming at this time of the year, I should go with a cotton light grey?