By Dan Snierson
Updated October 10, 2010 at 12:00 PM EDT

Kody Brown’s big family is now even bigger: TLC is confirming that the polygamist featured in the TLC reality show Sister Wives married fiance Robyn Sullivan, according to E!online. The private ceremony, which took place in May, will not be televised, but the reception will be featured in the show’s final episode. Sullivan brings three children from a previous marriage to this union; Brown now has four wives and 16 kids. The Utah County Attorney’s office has not yet decided whether Brown and his spouses will be charged with felony bigamy.