For better or worse, so-called French girl style never seems to go out of fashion. Yes, searches on Pinterest for “classic Parisian style” are up 1,795 percent versus last year, according to the site, and sales have been robust for brands like Sézane, which recently opened its tenth U.S. store, in Brooklyn, and Rouje, whose lone U.S. store is in SoHo. But it’s more trope than trend. The evergreen appeal, of course, is grounded in what it promises: an inside track to the maddeningly elusive, studied-but-carefree dishevelment of a Jane Birkin or Jean Seberg—neither of whom were actually French, of course. (Searches for “messy French girl” are up 63 percent on Pinterest this year.) Given what’s going on in the States these days, can you blame anyone?