Come Spring, I spot a trend that the Man-Repeller is sure to be all over—the fashion Birkenstock. The Celine runway had the most notable pair, swathed in mink, while Miu Miu's are bejeweled and Giambattista Valli's are studded. For those obsessed with runway trends who don't care about looking taller or thinner, this is the shoe for you.