I've got an interview coming up in a week and a half. A suit is, of course, required, right? Its not a more casual affair?
I wore a nice skirt and button-down shirt for mine. I don't think my interviewer was in a suit either. This can vary depending on who/where your interview/er is, so it can't hurt to send an email to clarify.
Dude...you don't ask an interviewer what to wear. Just wear a suit. If you're overdressed, it's not a big deal. I would laugh if someone asked me what to wear.