I found my inspiration here. I knew I needed something fairly conservative to copy, A) because that's what predominates my wardrobe, but B) because I was going out with Tom and he's nothing if not conservative. And I kind of like him.
Shirt and undershirt: Shade clothing
Pendant: Lia Sophia
Belt: random shop in Paris
Skirt: don't remember
Shoes: Steve Madden, thrifted