I would never implicitly state that one should or shouldn't wear this or that, but there is one particular fashion faux pas that I'm extra persnickety about. Almost every day, I walk behind people who make a fundamental style mistake. It's not about what's in or out; it's about how to make the most of your hard-earned purchases. It's such a common and easy slip-up that I've even seen fashion editors do it.
My pet peeve? When people neglect to undo the large stitch that crisscrosses on the back of your coat. You know, the funny little tacking threads that hold the back pleat or back vent together, right at the bottom? Those definitely, unequivocally, 100% need to be taken out before you wear your new outerwear. If you don't, the tailored silhouette doesn't sit right—the hem will instead heave and stretch to fit around the body, rather than just skimming in the most flattering way.