Not everyone is 6', but I never hear people complaining that we need more short models.
A size zero model would fit into around a size 4 or 6 in the UK as I understand it, so someone who is a size 10 would be closer to a size 14 or 16 in the UK, which is roughly average.
I know there's a whole bunch of "size inflation" and "vanity sizing" going on and that sizes a different from shop to shop and even item to item in the same shop.
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