There is an article that goes with that video Jade86. Looks like they are getting a bad wrap for not doing interviews and ignoring guests. I'm thinking Diane was asked to go because she's Chanel's rep for makeup and she's in the exhibition. Josh went as her plus one. Also, they were down there for the jewellery party anyway.

From the video, for some reason Diane dodges all questions and people. Josh gets asked but doesn't answer, which is unlike him. He seems to want to, but for some reason seems to be prevented for doing so. and seems annoyed about it. They took photos with people, but the ignoring part, I'm guessing is the magazines that were there. Diane is a Chanel representative, why didn't she give interviews? Her and Josh are in the exhibition, but maybe they weren't given permission from Chanel to give interviews though. It talks about Karl having a fallout with media about the exhibition.