Janelle Brown's daughter Maddie Brown catches the family by surprise with her fourth pregnancy reveal on Sister Wives - but it's her due date that brings some of them to tears. In Us Weekly's exclusive sneak peek at the Sunday, October 12, episode of the TLC series, Maddie, 29, tells her mom, Janelle, and Christine Brown that she is pregnant with baby No. 4. To make an emotional moment even sweeter, she shares that her due date is March 4 or 5. "That's mom's favorite date," half-sister Mykelti Brown says in the clip, which causes Mykelti's mom, Christine, 53, to smile.