The polygamous reality star officially married his fourth wife, Robyn
Credit: George Lange/TLC

The Brown family has always been open about their polygamist lifestyle, but it came as a surprise when patriarch Kody quietly ended his legal marriage to first wife Meri, then wed fourth wife Robyn shortly afterwards.

“We have chosen to legally restructure our family,” the Browns said in a statement on Tuesday. “We made this decision together as a family. We are grateful to our family, friends and fans for all their love and support.”

While the Browns have yet to elaborate on the exact details of why they made the legal switch, it may have to do with making sure that 34-year-old Robyn’s three kids from her previous marriage have access to the same insurance and other benefits as the rest of the children.

And despite the legality of a divorce, a source close to the show says the “family structure hasn’t changed,” adding that Kody, 44, and all four wives remain “spiritually married.”

TLC’s hit series airs Sundays at 9 p.m. ET.