I was recently asked the question, "What should photographers wear?"
The obvious answer is that it depends on the shoot, and what your client expects! Generally, I try to wear comfortable shoes and all black clothing (so that I don't stand out). Jamie Benjamin is a great example in this photo!
Otherwise, I kind of try to follow these ideas:
Casual events: casual clothing
Professional events: blazer + work pants
Wedding/family photos: yoga pants and a nice shirt (since I often get into awkward places or lie on the ground, I need to be super comfortable!)
Headshot/product/brand photography: depends on the client and the location!
What I would love to know: what do YOU expect photographers to wear?