Jocke is from Sweden so I feel obligated to add some of my observations:
Here in Sweden we have strong feminist movement that is strongly opposed to any sort of "beauty ideal". Unfortunately, this has influenced Swedish woment in a negative way during last couple of years so we now have notably higher percentage of not-so-slim bellies exposed under ahh so short tops.
Anyway, trend is slowly moving from "Kate Moss"-look towards "neither skinny or fat" look...
I had my "taste" formed in early 90's so I'm somewhat subjective though