The Secret Lives of Mormon Wives family just got a little bigger. On Instagram Sunday, Mikayla Matthews announced the birth of her fourth baby - a little girl! Aww! In a carousel of photos, we can see her with the newest addition, alongside her hubby Jace Terry. The emotional pics give us a little glimpse at the newborn - whose name hasn't been revealed yet - wearing a pink hat. The 25-year-old wrote in the caption: "7•17•25 our perfect baby girl is here.