I can more than entertain arguments for New York, London, Paris and Milan. But in my humble opinion, it's Milan's more mellow cousin to the south, Florence, that is the nattiest city in the world.
One need look no further than THE Sartorialist himself, Scott Schuman, for proof. Here are a few of my favorite Fiorentini from Scott's blog.
Agree? Disagree? Where are the world's nattiest men?

*Beautiful brush, and to share with everyone!
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ME is coming home for Christmas.
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Most luxury items are actually purchased by the aspirational non-rich, who are presently having their wings clipped by lenders.
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Congratulations********************************
To many more happy years together! Love from B.A**********************
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