Scott Disick has expressed his worries for his three children after ex-girlfriend Kourtney Kardashian's fight with sister Kim Kardashian. Kris Jenner's eldest two daughters were seen in an explosive brawl during scenes of their TV show Keeping Up With The Kardashians in March.The 36 year old has now admitted he worries about leaving his children Mason, 10, Penelope, seven, and five year old Reign alone with their mum and her reality star sisters.