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The teenage girls in the Duggar family aren’t just waiting for marriage to have sex, they’ve vowed not to have their first kisses until their wedding days.

In their new book, “Growing Up Duggar,” Jill, Jessa, Jana and Jinger Duggar, of TLC’s “19 Kids and Counting,” divulge their rules of “courtship,” and what it’s like being from such a large family.

“The message that we are really trying to relay is just to give girls—which is our main audience—just the tips and the things that we’ve learned through life and what our parents have raised us just believing,” Jana told Fox News.

And that means very little physical contact with a significant other until marriage.

“I think we’re saving like hand holding and that stuff more for engagement and we’re saving our first kiss for our wedding day,” Jessa explained.

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Their parents have taught them how to be good family members, Jill said.

“We really have learned a lot from our parents’ example… teaching us to be each other’s best friends.”

Watch the video above to see what else the “19 Kids and Counting” stars had to say.