Girlboss is a new Netflix show that tells the story of Nasty Gal creator Sophia Amoruso's early years as a proto-entrepreneur. We spoke to the show's star Britt Robertson about her immature character and how the show differs from Amoruso's book. NME: Girlboss is the memoir of Sophia Amoruso. What's it like playing a real person? Britt Robertson: “It's funny, because I …