So if finding maternity clothes has you in a rage at the moment, spend, spend away on Koka Mama. The new line of stylish threads for expectant mamas comes all the way from London — and it doesn’t come cheap. One look at the collection and you’ll see why: The mix of pants, dresses, sweaters, and tops reads effortlessly chic. . . Made from cashmere, silk, and cotton, the styles echo designs you’d choose even if you weren’t round about the middle. But dresses are slightly longer in the front to avoid the inevitable riding up as your belly expands, Lycra waistbands curve under the belly for maximum comfort, and an elastic band at the back of pants is cut higher to keep trousers from sagging.. . .Standout pieces include the cashmere poncho, a cotton twill blazer with button detailing at the back, and a full-length dress elegant enough for a summer wedding.