VIDEO : Kim And Kanye Expanding Their Family

(CNN)Kim Kardashian and Kanye West are expanding their family again. A source close to the couple told CNN Wednesday that they are expecting their fourth child via surrogate this year. The couple also have daughter North, 5, and 3-year-old son Saint. Us Magazine was the first to report the news. While pregnant with North, Kardashian West suffered from pre-eclampsia, a complication characterized by high blood pressure. She also had placenta accreta in both pregnancies, which occurs when the placenta attaches too deeply in the uterine wall.