Stitch Fix founder and CEO Katrina Lake talks with Recode's Jason Del Rey about using personalized data science to help consumers find clothing that fits and looks good. Stitch Fix's personal shoppers sometimes rely only on the numbers but usually use their intuition as the "last mile" between buyers and the right clothes, which are delivered in a try-on box. Lake says recent expansions into men's and plus-size fashion are helping the company grow. She also talks about what she has learned from serving on the board of food delivery service GrubHub, which went public in 2014.

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