I don't know what the rules are with double denim. I have never really considered wearing it. Ever. Until today when I chucked on my chambray shirt because it was crazy windy and I was cold. I am not leaving the house today as I am (supposed to be) revising for my exams next week, but just in case I did want to venture out into the big, judgemental world, what way is best to wear double denim? Or should I just save it for cold anti-social revision days?