Kim Kardashian and Kanye West's surrogate in labor as baby number four is on the way

Kim Kardashian and Kanye West's surrogate is in labor. Her sister Kourtney Kardashian broke the news during an appearance on The Ellen DeGeneres Show on Thursday, as she revealed the power couple were currently at the hospital and awaiting the birth of their fourth child, a son, via surrogate. As the 38-year-old reality star was also set to appear on the show, however Kourtney revealed the reason for her absence - much to the shock of both the audience and their mother Kris Jenner, who was left bewildered.

It remains unclear if the 41-year-old rapper and 38-year-old reality star will be in the delivery room though Kim was during the birth of daughter Chicago.

Ellen asked about why the middle Kardashian sister was absent and Kourtney, 40, replied: 'So, my mom doesn't even know this but Kim's surrogate went into labor so she's at the hospital. Kris, 63, appeared to be blindsided by the news as her mouth dropped and she said: 'What are we doing here? Come on, Ellen! Fire up the car.'