Maxi dresses: These ankle-sweeping dresses can look sweet, but shouldn't be worn unless you're on holiday in a tropical climate or going to a cookout. Hey, I'm guilty of this fashion offense too. I recently wore my cute tie-dye maxi dress to a press event, but in hindsight I think the look was too beach-y and informal.
Moccasins: Please don't wear suede shoes lined with faux fur in summer. It just doesn't make sense. And aren't your feet hot?