Brand new The Kardashians trailer has confirmed that eldest sibling Kourtney Kardashian, 42, and fiancé Travis Barker, 44, are trying to have a baby together.The video clip delved into various scenes from the family's lives set to air on the Hulu series, which debuts on April 14. Mum-of-three Kourtney, who shares children Mason, 12, Penelope, nine, and Reign, seven, with her ex Scott Disick, 38, began by admitting that it's been an interesting transition since the end of former reality series Keeping Up With The Kardashians.