Staples are indispensable for every day, but also for dressing up. This lacy T-shirt is versatile enough to flit from a flowing slit skirt to tuxedo pants or a suit with ease.
To buy: Porcelain cotton-and-nylon top, $125, Trillium, 410-821-9696. Rachel Zoe silk-and-spandex skirt, $550, Neiman Marcus, 888-888-4757 for stores. Charles David shoes. BCBG belt. Ippolita earrings.