Personally, I have never been able to blend in no matter where I am, and I long ago gave up trying.
But enough porteno's comment to me in spanish about the way I dress that at least I have confused them about where I am from to some degree...
I can always spot an argentine by their shoes.
If I am in the airport in Dallas, waiting to board the flight to Ezieza, its easy to pick out the tourists from the returning locals just by looking down.
Argentines wear crazy mishmash shoes that are half loafer, half running shoe, or boots that Barbarella might have worn if she was a Hong Kong Hooker in Roman times.
Americans wear cheap looking chinese running shoes, often blindingly white, or orthopedic variations on what male nurses wear in the dreariest of rural US "managed care" facilities. American women tourists almost always go for "sensible". Chaco's, for example. Lot of river rafting to do while walking down Florida, I have always found.
No Argentine EVER has bought "sensible" shoes, nor will they. In fact, I am quite sure there is not a store in BsAs that sells "sensible" shoes. Even the steel toed work boots have a bit of heavy metal bondage fetish sprinkled on em, and the orthopedic old lady shoes are still flirty enough to wear to a telo.