Kim Kardashian and Kanye West have officially welcomed baby number four to the family. On Twitter, Kim ecstatically wrote, “He’s here and he’s perfect!” The new baby will join Kim and Kanye’s three other children: North, Saint, and Chicago, who was also born via surrogate.

The couple hasn’t yet announced a name, but Kim did say that he looks just like Chicago. “He’s also Chicago’s twin lol I’m sure he will change a lot but now he looks just like her,” she wrote. In January, Kim said she had been researching Armenian boys' names on Google in honor of her family's heritage but hadn't found anything. We shouldn’t, however, expect the name to be too different from the other kids. Calabasas West, maybe?

Kourtney Kardashian was the one to break the news that Kim and Kanye’s surrogate was in labor yesterday. She and her mom, Kris Jenner, were appearing on The Ellen DeGeneres Show, when Kourtney said, “So, my mom doesn’t even know this, but Kim’s surrogate went into labor, so she’s at the hospital.” Kris, who apparently had no idea, said, “What! What are we doing here?!”

Kim and Kanye decided to explore the surrogacy option with Chicago after Kim experienced appendicitis and preeclampsia, which causes high blood pressure and symptoms like water retention, with North’s pregnancy. The condition can make labor extremely difficult for the mother and child. During her pregnancy with Saint, Kim developed placenta accreta, a condition that causes the placenta to grow too close to the uterine wall.

Earlier this week, there was a misunderstanding on social media when Kim posted a picture of a text that Kanye had sent her that read, “This your life. Married with four kids. Get people out of jail. Cover of Vogue. Go to church every week with your family. Dreams come true.” Many people thought the baby had already arrived, but Kim quickly responded. “Wait just saw news our baby boy came but that’s not true! It’s Met Monday, I’m in NYC. I would be at the hospital lol,” she tweeted.

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Now, however, the baby is truly here, and Kim and Kanye’s brood is officially a foursome. Will they go for baby number five? Who knows. In the meantime, Congratulations to the West family!