The 24-year-old reality star and makeup mogul didn’t disclose the new baby’s name.
The child was apparently born Wednesday, as the Instagram post was captioned with the date “2/2/22” and a black-and-white photo of the newborn apparently holding hands with his big sister, Stormi, who turned four on Feb. 1.
Following the birth announcement, congratulatory messages poured in from sisters, Kim, Kourtney and Khloe.
Kim led by simply commenting with a baby angel emoji and a blue heart.
‘Mommy of two life,’ gushed Kylie’s oldest sister Kourtney Kardashian, who added a red heart and praying hand emojis.
Khloe marked her love for Kylie and her new nephew with several blue hearts.
Also sending their love was Hailey Bieber, singer Normani, among many other friends.