High-end designers are chasing the booming children's-wear and children's-furniture markets with ever more stylish fare. Already companies like Bottega Veneta, Tod's and D&G have been creating apparel and leather goods for tots, and J. Crew is entering the field with tiny Argyle cardigans. In response to increasing demand for baby furniture that "flows with the rest of the house," the home-furnishings website Nurseryworks has commissioned midcentury modern-style cribs, above, changing tables and rocking chairs from California-based designers Glenn Lawson and Grant Fenning of Lawson-Fenning, as well as graphic bedding from Rosemary Hallgarten. Both offer high functionality and sleek design. Now the nursery will look just like a Neutra design.