irst Lady Dr. Jill Biden is a pro at pulling off polished and elegant outfits no matter the occasion. Not only does she carry out her duties as FLOTUS with grace, but she also continues to teach English and writing classes at Northern Virginia Community College. With this in mind, it’s easy to see why her sartorial go-to pieces fall into the workwear category. One of the most notable items in the first lady’s regal wardrobe is her collection of dresses, which Biden often wears (and rewears) over the years. Her favorite styles all possess an elevated, timeless quality with...