I came across a documentary on YouTube called Haute Couture: The Great Designers from around 1986, I think. I thought it was a good watch. It features Emanuel Ungaro, Karl Lagerfeld (shading Yves, naturally), Valentino, Yves Saint Laurent, Christian Lacroix, the Fendi sisters, Pierre Bergé, Grace Mirabella (and other editors), women who bought the couture, etc. Interesting archival footage! It's really a relic of it's time (Nan Kempner discussing furs, lol), but it also deals with the same questions surrounding haute couture that, well, will probably always exist as long as haute couture exists.