Elspeth Gibson's look is as wearable as it is sweetly sexy. The dress-of-the-moment is either a white fitted broderie anglais shift or a soft silk frock printed with hot-pink flowers on a chocolate background. Sequined sweaters, lime-green chiffon skirts that dipped at the hem, gingham bikinis or skirts that revealed lots of leg, and crystal-covered halter dresses will make for a sublime summer wardrobe. Take it to St. Tropez.