The mother-of-three revealed in a second tweet that the baby would be known as “Chi” (pronounced “Shy”).
Kimye are already parents to 4-year-old daughter North (known as “Nori”) and 2-year-old son Saint. The couple welcomed Chicago via surrogate on Monday, weighing 7 lbs, 6 oz.
“Kanye and I are happy to announce the arrival of our healthy, beautiful baby girl,” Kim said in a statement on her app.
“We are incredibly grateful to our surrogate who made our dreams come true with the greatest gift one could give and to our wonderful doctors and nurses for their special care.
“North and Saint are especially thrilled to welcome their baby sister.”
Kardashian told Ellen DeGeneres during her pregnancy that she had not decided on a name yet.
“We don’t have a name. At the baby shower, I was like, ‘I don’t want to play any baby games, measuring the belly — none of that will work for this time around. I just want everyone to write a name on a little tile and see if there’s something that sticks.’”
Some Twitter users had speculated that the baby could be called Chicago – the US city where West is from.