Los Angeles, Jan 3: Reality TV star Kim Kardashian and rapper Kanye West are expecting their fourth child -- a boy -- via surrogate. Multiple sources have confirmed in the new issue of Us Weekly magazine. In August, the magazine reported that the couple, who used a surrogate for their third child, 11-month-old Chicago, had one embryo left, a male. Now he is due to arrive "in very early May", said a source. In addition to Chicago, the couple are also parents to North, 5, and Saint, 3. Another source said Kim, 38, "always wanted four kids". --IANS