What's the name of this type of fashion?

The past couple months, I've been drawn towards political thrillers/ dramas; specifically Scandal & House of Cards. Kerry Washington's character Olivia Pope from Scandal and Robin Wright's character Claire Underwood from House of Cards dress conservatively, compared to other shows, but are still very chic and effeminate. They typically wear neutral colors with minimum make-up and jewelry, but they still manage to look stunning. I know both actresses are gorgeous women, but I think the clothes they are wearing play a big factor. My questions are: what is their type of fashion called? Where can I buy clothing like them on a Jimmy John's salary of a college student lol? I want to dress like them, but where can I start? Help fashionistas!