Outside of the fashion world, Vivienne Westwood isn’t necessarily a household name, but after Lorna Tucker’s documentary Westwood: Punk, Icon, Activist is released, it very well might be. Greenwich Entertainment announced that it has acquired the U.S. distribution rights to the first documentary that puts the spotlight on the British fashion design icon. Westwood premiered earlier this year at Sundance and follows the titular designer’s life, her fashion, her personality…