The bag: Marc by Marc Jacobs Spot On Color-Block Leather Tote ($598)
Why we love it: The colorblocking in seasonal olive, black, and crisp white give this slouchy satchel a subtly sporty vibe. Suede side panels add luxury, but at the heart of it, this gorgeous bag is also entirely functional. It's the perfect investment for the busy (and stylish!) girl on the go.