How to, with minimal effort, go from day to night? This classic-with-an-edge (see the arrows on the side?) crossbody has a removable strap. Keep the strap for day, then remove it to use the bag as a clutch for night. Add black heels and a bold lipstick, and you're easily ready for that West Hollywood party.
Mackage: "Dena" Black Crossbody Bag, $350
[Photo courtesy of Mackage]