I don't know about your town, but I've never seen a grandma wear the clothes Ayu wears in that photoshoot here. Especially the one on the cover.
Maybe I'm too old myself, but I think they are fashionable and I like the warm earthly brown.
Edit: Oh, I didn't see that hat on page 4 before. Mmmh, looks kind of grandma-like, that's true. But she's not wearing it, so I'll just pretend it's not there....