Kim Kardashian and Kanye West's fourth child is currently on the way.
The couple's surrogate, who is carrying their fourth child, a baby boy, went into labor on Thursday.
Kourtney Kardashian revealed the good news while filming "The Ellen DeGeneres Show" on Thursday. She said her sister rushed to the hospital following the news.
The eldest Kardashian sibling was on the talk show to surprise her momager, Kris Jenner, with six of her grandchildren in honor of Mother's Day.
"Kim was supposed to be here," DeGeneres said, setting up another surprise for Kris
"My mom doesn't even know this, but Kim's surrogate went into labor," Kourtney said. "So she's at the hospital. … So I have to go have a baby."
A shocked Kris replied, "No! What are we doing here?! C'mon, Ellen."
Ellen DeGeneres later took to Twitter to react again to the news. She wrote:
'I surprised @KrisJenner with 6 of her grandchildren. Then I surprised her with one more. Sending love to you, @KimKardashian and @KanyeWest! @kourtneykardash.'