Duck Dynasty star Jessica Robertson shared that their family is expanding while revealing her 18-year-old daughter, Priscilla, is pregnant. "Me & Jep [Robertson] are excited to welcome another new grandbaby in October," Jessica, 44, wrote via Instagram on Sunday, July 20, alongside photos of Priscilla holding her baby bump. "Priscilla will give birth to our granddaughter & we are blessed to add another grandbaby." Jessica, who also shares kids Lily, 22, Merritt, 20, River, 16, and Gus, 9, with Jep, 47, noted that Priscilla's pregnancy wasn't in "the plans" that they "laid out" for her.