Some people ask, do you need to wear formal clothes for the interview? Not necessarily. But there are plenty of people who will tell you that you have to wear a formal suit to get extra points. The interviewer's impression will be good. Yes, if I'm in an interview, I'll put a lot of effort into dressing in order to pass the interview. So suits have become the best choice for everyone, because formal suits will give people a mature and capable feeling.
If you need to speak in person, you will also need to wear formal attire. After all, when you're wearing jeans and giving a speech, the audience always thinks...what about a boy's suit? The focus of the audience is no longer the content of the speech, but why the boy is wearing jeans today.
When choosing a suit, be sure to match today's theme. If it is in the job search process, generally choose black, gray, dark blue or the representative color of the job-seeking unit.
Of course, suits are not necessarily complete sets. They are too conservative and mediocre. You can do shades of the same color, or you can just wear a suit jacket.
This is my opinion, if you have a different opinion, you can express your opinion in the comment section below!