Good heavens, no, no abaya! You'd spend the entire interview explaining why you were wearing one. It's not offensive, it would just rouse curiosity. And you will find out that interview questions that are not acceptable in the US are perfectly fine here. It will be a bit chilly in a few weeks, you will want to wear a jacket and long-ish skirt or loose pants. Top button done. Nothing too tight when viewed from the back. Closed shoes. This advice is on the conservative side but it is a first interview, after that you can adapt your work clothes to your taste.
Mandi