Knew this would be a contentious issue but think the OP did try and question diplomatically so maybe some of the comments are a bit unfair, no need to delete the thread methinks, could be a interesting debate...
It's been in the papers enough that British women are going up in clothes sizes and are getting taller as well apparently. Bust sizes are on the up too and I for one are not disappointed with this. What I am disappointed with is the obsession with having as smaller size as possible which I believe is not the general view just those within the modelling profession - from what I remember the actual designers themselves but I have no evidence to back up what I can remember from reading somewhere.
I believe also that it's built into the male psyche sort of thing where curvy women are a better bet with procreation due to the perceived better ability to bare children in the same way we're supposed to be more horny in the summer so that by the time a baby comes along it's spring the next year so it has the best chance of surviving.
For me personally a larger woman is most definitely more attractive and sexy but that's on appearance, the same old adage "don't judge a book by it's cover" is most apt here, though I don't think British women or the men are by any means different to any other nation when it comes to size, but it's just my opinion of course