Do looks and style matter in an interview?

Ofcourese one's dress and suitable style is important as it will be make one comfortable to face the interview. However, to succeed in an interview he should have the potential and experience for the job concerned. 

Yes. But sometimes people can surprise you or push away by wearing orange clothes. 

Sure NOOO, He will not be qualified if he is not in a good style in the interview.

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Definitely It is.

the worst thing is that even your height is important. It is not vital but it is a unconscious contributory factor.

There is some thing called heightism. 

based on this theory, employers pay more salary to highest employees.

Regard,

If a candidate was a good fit for the position, but his attire in the interview was not very good, would you still hire him?

You must know the essence and not the appearance, but the appearance is necessary and worth taking into account the second stage,

Generally, a formal interview is the most common form. But some interviews take place in a casual atmosphere. It depends on a professional sphere, on a company, etc. In my opinion, a potential employee should provide the right impression for a potential employer - I mean a tidy appearance at least.

To some extent.

but the talent is important.

sometimes language, dressings and styles may not be up to mark.

The style will follow when someone in a good position  

It depends who and where you are getting interviewd.

In my opinioon looks and style should not matter in an intertivew, but yes how he or she carries himself/herself makes a big difference.

"I believe, that books should not be judged by its cover".

Thank you

Let me rephrase your question, do you someone who possess required KSA but not very smart in looks so do you ignore that applicant? definitely no. We don't make decisions based on outlook or dressing but yes one should prepare well for the interviews. We are not hiring for Hollywood or movie so the focus is on competencies.