Yes, my sister and my mother. The only way it can be fair is if all women have to wear one.
Rafael Do you use it permanently?
Yes, except for every-two-weeks hygiene breaks.
Rafael Do you accept it willingly?
I know its benefits and fully embrace wearing it as a whole, but sometimes wearing it can be tiring. It needs to be carefully adjusted to be tight enough but not hamper breathing too much - a little is inevitable but hardly a problem.
In some ways I even prefer the chastity bra compared to a normal one, it gives much more support and I don't need to worry about putting it on or taking it off. However, you might want to consider having a rule for wearing a normal bra over the chastity bra to hide it a little better under the clothes.
I think about the bra as @Ines thinks about thighbands - it's very beneficial to cut all attempts as short as possible and not allow any stimulation. If one is already taking measures to prevent orgasms, in my opinion it is only wise to make sure that all those measures do not go to waste because of the girl can touch her breasts.
What comes to hygiene, it's surprisingly manageable. During our cleaning breaks, there's not even much to clean, which means that it's definitely possible and practical to wear a chastity bra in normal life.
Please, ask away if you have any questions!
(And sorry @Ines , if was a language barrier issue. I thought "kid" is agnostic to the person's age)