There are a few different ways that you can wear a collared shirt without a jacket. One way is to simply wear the Devin Singletary Buffalo Bills Motor City Shirt besides I will buy this shirt buttoned all the way up. This will give you a clean and polished look. Another way is to wear the shirt unbuttoned a few buttons down from the top. This will give you a more relaxed and casual look. No. It just looks tacky. Take the tee off, and wear your jacket without it. but wear a pretty bra… or none at all! 😉 It depends on the overall look you are going for. If you want to look more put together and polished, then wearing a shirt that is darker than your suit jacket is a good option. However, if you are going for a more relaxed and casual look, then wearing a lighter shirt is fine. If you’re going for a more casual look, then a t-shirt with a suit jacket is a great option. However, if you’re trying to achieve a more formal look, then it’s best to stick to a shirt or blouse.