***FILE PHOTOS*** * KARDASHIAN A FIRST-TIME MUM KIM KARDASHIAN's sister KOURTNEY is a new mum - the reality TV star gave birth to a baby boy on Monday morning (14Dec09). The Keeping Up with the Kardashians star gave birth to Mason Dash Disick in Los Angeles. He's the first child for Kardashian and her boyfriend Scott Disick. Kardashian, 30, re-united with her ex-fiance, 26-year-old Disick, in August (09) after learning she was expecting. Her spokesperson confirms: