Why don't Europeans wear European style clothing anymore? They all wear American style clothing since the second WW. Do Europeans not take pride in their native clothing?

If we’re talking about the t-shirt and jeans then you have a point, as these were made popular by Americans.

Except that Jeans were patented by immigrants from Europe - Jacob W. Davis was Latvian by birth and Levi Strauss was born in Buttonheim, Bavaria (now part of Germany as he was born in 1829). The classic men’s suit was made popular in Victorian England as a more pragmatic alternative to the gaudy fancy coats of the Regency period while for women the revolution towards less conservative dresses was thanks to French maiden Coco Chanel and her Little Black Dress.

Very French.

Sure, it was inspired by Henry Ford’s famous motto for the Model T “you can have any colour you want, so long as it’s black” but it is still coming from a French model and fashion guru.

It merely appears to be American clothing because you look over, you see we all dress like you, there are these pictures of Europeans weating quite colourful exotic outfits so you wonder “why did everyone stop wearing these?”.

It’s hard to say what fashion is American and what is European. Culturally America gets much of its identity from Europe anyway as long before World War II the fashion identity of Europe changed to a more universal look as people adapted to working in factories and with machines. There was much more mixing thanks to the cosmopolitanism in great cities like Vienna, Geneva, London, Paris and so on a country’s latest styles were no longer unique to a particular region of the world.

This had been going on for centuries in Europe; England, France and Germany would effectively take turns in being the trendsetter, offering fashions that everyone else among the middle and upper classes would wear. For everyone else, we wear what works, this is true of any country. Styles change, America has something of a hegemony on culture but a lot of that comes from or is inspired by Europe.

Styles change, tastes change and as machining devices get better, the clothes get more comfortable. There’s been a trend towards minimalist design since the 1830s because more and more people stopped wearing hand-crafted outfits. The new machine-fashioned outfits were cheaper, easier to replace and were frequently made with as little material as possible without losing their practicality.