Though he launched his clothing label less than two yeas ago, 23-year-old designer Alexander Wang already has a firm handle on effortless urban sophistication. Of course, when you're aiming for chic, working with cashmere is a good place to start.

Until recently, Wang was known mostly for creating modern versions of cashmere everything, from tank dresses to sweatshirts to skirts. Now, he's launched a sleek line of high-end denim made from a surprising blend of silk and wool. The unifying theme underlying Wang's casualwear—like this shawl-collar wool bomber jacket—is simplicity and luxury. To see the highlights from his Fall 2006 and Spring 2007 collections,