it shouldn't matter, the way you look will influence the employment
decisions. In most positions there will be times when you are
representing the company to clients, they will not want someone
to work for them who is un-presentable and a potential embarrassment.
The interviewer may also associate sloppy dressing, with sloppy
work and a lack of motivation - not the greatest selling points
for an interviewee.
these simple tips for dressing at interview and you should be
of dressing for job interview
Tips for women
Tips for men