I recently watched a batch of fashion documentaries: Valentino, Yves Saint Laurent, Chanel, The September Issue, and Lagerfeld Confidential. This documentary certainly held my interest. Lagerfeld is a man who has opinions and is not afraid to voice them. He is very open about his upbringing and what sounds like a brutally frank mother. The film follows him through his process of designing, through his photography sessions. We see photos of him when he is younger that are very surprising, he was as stud! I found that he came off as sharply intelligent, articulate, very in touch with the history of fashion and its influences, and a hard worker. He is brutally honest about fashion - that fashion is not 'fair', that he realizes it is a flaky, tough industry to be in, and one has to be mentally tough to be a survivor within it.
With regard to giving a credit to Nicole Kidman, I think it is a misleading. She appears a couple of times in a photo shoot, has very little to say, it would be just as relevant to give a credit to the other models that he used. On the DVD case there is no mention of her. Giving her a lead credit on Amazon looks like an attempt to cash in on her fame more than an acknowledgement that she has a major role in the documentary.