I think its taken from her blog about clothes. It is kind of her musings /research on why people (especially women) take such pride in their clothes. She also talks about those who claim they are not interested in clothes and disputes their claims. I found it a good read because while I don't judge others for being interested in clothes, I often berate myself for spending time on fashion when I should be doing other things...work, family etc.
There is also a fascinating read about a woman who survived Auschwitz to go to be one of the leading directors of women's fashion in Canada and what clothes represented to her after her experience. I like how she ends the book "take pleasure, I thought: Take it while you can."