You are not required to dress up. Sneakers, jeans, and T-shirts are all permitted, if not encouraged. Dressy-casual: You should dress up a little bit. However, it does not include pants or footwear. Ordinary clothes are sufficient. If you want to look nice then dress up yourself and your attire will reflect that. Wear something formal if you have an important meeting or event. In this case, it is acceptable to wear jeans as long as they are clean and pressed. If you go for a more stylish look then try wearing white jeans. If you are going out for drinks with friends then dress down too. Jeans, a T-shirt, and sneakers will always look good. There is no correct or incorrect way to wear jeans. It is all about your personal preference. Some people like to wear jeans all the time while others find them uncomfortable. If you feel confident in what you are wearing then other people will too.