We dress to impress others and ourselves.
You have to dress according to the occasion.
Generally men's clothing does not get many comments, but all the same it matters.
Yes. I strongly believe that what you wear is a direct representation of who you are and how you want to be treated. Especially on interviews. Dress up to show respect and so they interviewer will take you seriously. Yes, yes, yes, your clothes will make a difference with your level of success!