<p>The Harvard shirt is overkill. Don’t do it. They’ll think you’re annoying.</p>
<p>Honestly, the interview is pretty chill and isn’t suit-worthy. Wear khakis and a polo. If you’re meeting in a business or office, particularly one that is VERY nice (i.e. suits and ties required at absolutely all times), then wear the suit. If you’re meeting over coffee or at the interviewer’s house, then go with the khakis.</p>