Find Your Perfect Party Outfit

Informal

Translation: Basic but not boring

A dress or skirt isn't necessary for at-home get-togethers, but khakis don't quite cut it either. Elizabeth Rogers, an environmental consultant and author of Shift Your Habit: Easy Ways to Save Money, Simplify Your Life, and Save the Planet, stands out in a plaid blazer (Libertine), leather pants (Current Elliott), and platforms (Brian Atwood). "Each winter I update with a great jacket," says Rogers, whose book advises readers on how to have more for less. "The crystal elbow patches make this one modern."

Tee, Loft. Earrings, Lisa Freede Jewelry. Rings, Pomp by Sharon Case and Juko at Supplements NY. Bracelet, Ann Taylor.