Black tights or bare legs? Autumn’s crucial style debate returns

It’s the million-dollar question for power dressers everywhere: have tights come in from the cold?There are three fundamental questions that must be addressed at this point in every year. Question one: is it time to switch the heating on? Question two: whose family are we having for Christmas? And, drumroll, question three: can we wear black tights?The first two are mere detail; the third is everything. The opaque tights issue is a thorny one in fashion. It divides women along class and ge