What is the best kind of "athletic" shoe for everyday walking and errands? - narrow walking shoes

I do not know officially about the walk. I spend my days driving my young children, shopping, etc.. I need a shoe, comfortable light that in a small width (is I wear a AA), adequate support and stability, and looks great with jeans. I'm only 30, so I want something that seems very young and hip. :-) I saw the New Balance shoes, but have no idea whether I need a cross-trainers, hiking boots, or whatever. Help!