11 Common Style Mistakes Mistake 1: Blooper: Ignoring the fit Correction: Get measured You’re not fooling anyone by adding extra fabric to cover that beer belly. And you’re not going to look slimmer by wearing a size smaller either. Wear the suit you fit into, not the one you wish you fit into. If your trousers drag, jacket droops or sleeves are too long, find a tailor and get it fixed.