@sinituulia I've lived in California, and people there rarely put on real clothes for anything. (That's both a snobbish French person comment, and something I like immensely because in my early twenties not feeling judged for my clothes was very freeing.) And even here in France no café will mind that you're walking in in sweatpants, a lose jumper and flipflops.
(Deliberately not commenting on the myriad other ways this is wrong.)