I’m looking for a book, could be from any time before 1975 or so.
It was a big picture book for young children which I think was primarily about different hats. The main thing I remember is that there was one spread with a woman wearing a fancy hat with netting on it, and there was a fish design in the netting such that the fish went right over her eyes.
My mom thinks it was called something like “My Aunt’s Hat” but isn’t sure. I haven’t had any luck googling that.
She remembers it as being about an older woman, sort of crazy, with “old lady tight curly hair”.
She remembers the image as being “big, falling off the page” and there may have been a tiny little fishing line on the page.

Pretty sure it is not:
Jennie’s Hat
Aunt Lucy Went to Buy a Hat
Aunt Flossie’s Hats
Caps for Sale
Cat in the Hat or any Dr. Seuss including Bartholomew Cubbins Old Hat, New Hat or any Berenstain books

Although if there is a spread with the fish hat in one of these, that’s probably it.