Karlie Kloss may be a fierce supermodel with legs for days, but she’s also a super adorable teenager from St. Louis. The W cover girl is featured in W Editor at Large Lynn Hirschberg’s latest “Screen Test,” in which she discusses being a teen model, being forced by Carine Roitfeld to do ballet at a Prada store, and what high school was like, which wasn’t very long ago for the 19-year-old.

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