I can't believe quite how rude so many of the audience were, not clapping, arms folded, disapproving expressions etc. Mad Max had great costumes (fabulous looking film generally, which deserved its wins) and she was honoured for that. Aren't creative types supposed to be interesting looking?
I see last time Jenny Bevan won an Oscar she wore a tuxedo, so I assume she's never really been a dress wearer (and most of the dresses worn at the Oscars are quite ridiculously OTT with a really unhealthy obsession with the women's appearance, virtually no comments on what the men wear of course).
Did she look a little scruffy, well sure, but it's a technical award for a behind the scenes person who presumably was being awarded their award for their skills, which have nothing to do with the way they look. She is great at making other people look fabulous though!