LaQuan Smith is a rarity in the fashion world as an African-American designer.

LaQuan Smith is all about the champagne lifestyle: bubbly, luxurious and, especially when it comes to the womenswear he designs, sexy. The designer made his New York Fashion Week debut at the age of 21 with a sleek, edgy collection he dubbed the “Water Goddess.” Ten years later, his rise seems meteoric in the years…