A friend in fashion who has been involved in haute couture recommended 'Dior and I' as the best documentary on the art. It focuses on the period where Raf Simons came to Dior and focuses on the Dior's atelier at Dior. The caveat is I’m fascinated by the process of how things, particularly things that are difficult to make and/or involve serious craft, are made. In this case you see the dynamics of the core resource - the craftspeople in the atelier - as they work with a new person. $5 on iTunes .. probably similar elsewhere.