You could wear a selection of many clothes. Considering it is a job interview youd want to look and feel smart, sophisticated and confident at the same time. Taking inyo thought your body shape i would wear a knee length pencil skirt, a blouse and heels (no higher then three inches ) you dont want to trip over on your job interview. Id use a hair tye and carry your hair up in a bun, Dangly earings will compliment ur face and large statement jewelry can style it up a little. Good luck! and oh remember to smile
Definitely dressy casual ... black dress pants and a blouse - don't go too colourful, but red accents tend to make you seem more confident ... a red scarf or girly-tie. Black flats - no high heels ... what you're trying to do is show the employer how suited (literally) you are to the job.
If I were you, I'd wear something that could be slightly casual, but also dressy. So no jeans, haha. Maybe black pants and a white blouse? Can't beat the classics.