Interior designer Christine Sacks, 32, wears suits from time to time for business meetings. "To me, they evoke purpose. I make them more feminine with a delicate camisole or blouse," like this silk bow-neck version. "The look is sassy without trying too hard," she says. Pairing variations on a color, like cobalt with blue-gray, is a sophisticated way of dressing. "Now I'm eager to try a more radical blue than my usual navy," says Sacks.
Suit: blazer, $650, pants, $425, both 3.1 Phillip Lim. Blouse: Hunter Dixon, $275. Cuff, Isharya. Clutch, Henri Bendel. Ring, Alexis Bittar. Pumps, Christian Louboutin.