Japan was the example that stood out to me. (It's where UNIQLO is from.)

I'm 5'11"/180cm with US11/EU45 feet. They didn't sell boots that fit me in Japan. I got a deal on an "XL" jacket that the salesman insisted I buy, because I was the only person to have ever come into the store that it fit. (It's the only thing I've ever worn labelled "XL.")