What fashion crimes have you commited and regret. I say regret because while some thing might not have been fashionable you may not regret them and be pleased with your unique sense of style.
Socks over tights- i regret attempting this and to be fair it didn't last long.
Sequined combats and flat uncomfortable glittery shoes-highly regret it and the shoes made my feet hurt!
Pea green matt tights and trainers worn with a skirt- quite proud of that one (alternitvely the purple tights worn under the same skirt etc)