Update: Interview went great! Thanks for the encouragement! More details next week. In the mean time, here's how I accessorized. The shoes and the belt don't exist online anymore, but you might be able to find them in stores.
Scarf from Urban Outfitters
Shoes (not exact, but close) from Banana Republic. My Peep toe wedge (pictured) was only $38! Originally $120!
Belt from Anthropologie (look for it in stores perhaps)