Tradition in Action (TIA) has two articles on Pope Pius XII's 1943 speech to the Italian Feminine Youth. They are The Dignity of Women Lies in Moral and Physical Purity and Young Women Should Not Leave Their Homes.
Here is a wonderful quote from the former:
How great is the dignity and liberty of the woman who does not allow herself to be enslaved, even by fashion! This is a delicate but urgent subject, in which your unceasing action permits us to hope for beneficial gains. Your zeal against immodest forms of dress and behavior, however, must not content itself with reproving, but also with edifying, by showing in practice how a young woman can in her dress and deportment harmonize the higher laws of virtue and the norms of hygiene and elegance.
I think "edifying" is a key word. It is what makes dressing modestly a challenge.
You will be hard pressed today to hear any Catholics talking about the subject of the latter article, Young Women Should Not Leave Their Homes. Modesty, yes. Girls staying home until marriage, no. The Protestants have taken the lead here, just as they initially did in homeschooling. I can recommend the DVD, The Return of the Daughters. Through interviews with several young women, it shows how they have defied the anti-family culture by staying home after high school. These women help their dads, open cottage businesses, act as role models for the younger girls in their churches and basically prepare to be helpmeets and mothers. As you can see from reading Pope Pius XII, this used to be part of Catholic teaching.
The courtship segment in the "bonus materials" category is especially good. It goes far beyond the minimal "save yourself for marriage" advice and glorifies saving the "first kiss" for the wedding ceremony. As I said, this is Protestant produced, so Catholics must ignore some things. There is no Catholic equivalent DVD that I know of, although Angelus Press is now promoting several books that sound like they would be helpful: The Education of Catholic Girls, Forgotten Household Crafts, and Motherhood and Family.
Nota Bene: I completely avoided the "Biblical Foundations" segment of the DVD. I know there are Biblical foundations for girls staying home, but I didn't want to spend the extra time that sorting through the Protestant interpretation of the Protestant Bible would require.