"Everyone says, 'Oh, you must have (been trying) to have a girl.' If the next one was a boy, then that's just our lot! It's true you do get a bit demented (with three boys). (But) the chaos of it is great." Actress Cate Blanchett is keen to expand her brood and have a fourth child with husband ANDREW UPTON. The couple has three sons, Dashiell, eight, Roman, six, and Ignatius, two.