Those in English speaking countries outside the USA often consume media offerings from inside the USA. It's not beyond reason that other countries would follow the lead of USA in fashion; probably really it would be the lead of costume designers in US films. The thrall of fashion appears to overrule common sense so the use of public transport, in London say, wouldn't necessarily over rule the fashionistas deciding that "hair is the new hat" or whatever.

That said, the point should at least have been addressed.