Chanel flats sizing

I originally went true to size with the classic cap toe ballet flats and it turned out to be a mistake. Now I always go at least 1/2 size up. It turns out that sometimes I’m between sizes depending on the style, but I always need to go at least 1/2 size up, but a whole size up for some pumps and flats (especially the sporty styles with elastic around them). It would be best if you could try them on, but I understand that if you don’t live near a store, that can be difficult. If that is the case I would advise you to call NM or a department store that carries them and older the same flats in 2-3 sizes. Keep the ones that fit and send back the ones that don’t. Good luck!