Dorothy Gale doesn't need Auntie Em to tell her gingham isn't just in Kansas anymore. Silicon Valley Street Style is a weekly feature that looks at the intersection of fashion, technology and taste.How many gingham shirts can you count on a single day in San Francisco? The countrified cross-pattern favored by newscasters and wind-blown Kansas teens, and made infamous via the New York City-centric Instagram account, is still going strong in Silicon Valley.