It is possible but not necessary to answer the formal dress, which means that we can show the defense teacher that you attach importance to this matter, and you also show your serious attitude. This may make your defense process smoother, and the teacher will give you more detailed guidance on the ideas and opinions put forward in your paper. Of course, if there is no requirement, it is nothing to wear casual clothes, because after all, you are all your own students, and you will not recognize you without casual clothes, and the core of the defense is the content and design of the paper.

If formal dress is required in the defense specification, it is necessary to wear formal dress. It is suggested that students take the time to buy a dress or customize a slightly high-end formal dress when they are in their junior and senior years, because formal dress is almost essential to go to the workplace or some serious and formal occasions before and after graduation. Defense is one thing. Wearing a formal suit for an interview with a bigger company will also make HR feel that you are more mature and pay more attention to this job.