After raising six children together—three of their own and three adopted—Hollywood couple Brad Pitt and Angelina Jolie finally plan to tie the knot. Pitt said in a recent People interview: “We’ve had a family, we’ve raised the kids. I am surprised how much [marriage] meant to me once you had that.”

But Bragelina’s kids-before-marriage lifestyle is no longer surprising, or even unusual. Delaying marriage has caught on with much of the less-glamorous side of American society as well.  A recent study by University of Virginia’s National Marriage Project found 44 percent of children of moderately-educated Americans are born outside of marriage. The number is a large jump from only 13 percent in 1980.

Moderately-educated Americans—or “Middle America”—make up the nearly 60 percent of the population who  have a high school diploma but not a four-year college degree. For woman under 30 in this group, the rate of children born outside marriage is even higher—53 percent.

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