I’m Catholic, and know a few women who do this.
I do not feel called to do it myself, but respect them doing so. They do not make a big deal of it; they pin a hankie to their hair as they enter the church.
I think it is a lovely devotion, but, as I said, I do not feel called to do it myself.
And the african-american Ladies wear their “crowns”. Catholic women don’t have to wear veils, they can wear hats. It’s like you say, a lovely devotion. The first time I saw it it seemed backward, especially since the women who do this tend to have large families, and not be afraid to make their family’s clothing.