What to wear for Job Interview

I'd say go with whatever the staff there wear. That's usually the approach I go for because if the people who work there have been hired then that is probably the kind of person they want working there. I'd say a suit would probably be the most appropriate clothing to go for, or a shirt and tie as weemcd said. My bad.

I wouldn't agree with "go what the staff were wearing". We generally wear tshirts and jeans where I work (some people are even scruffier). But if someone turned up to an interview wearing tshirt and jeans, then that would make a very bad impression. Most people interview for the job in suits, some interview in business casual dress. Between suit and business casual, I've never seen an interviewer be influenced by the dress choice in that regard.

I'd say "business casual" is your best bet. Shirt and any pants but jeans. You'll feel and look more comfortable than if you were wearing a suit but you'll still look sharpish.