The Kylie Cosmetics founder, 24, confirmed she gave birth to a son on 2nd February in an adorable Instagram post shared five days later.
Kylie has previously shared the little one's given name - Wolf - but the birth certificate confirms the newborn's full name is Wolf Jacques Webster, according to TMZ.
Kylie and Travis decided to give their son the rapper's birth name - Jacques Webster III.
The couple clearly love unique names, after naming their daughter, Stormi, who became a big sister the day after her fourth birthday.
Wolf’s birth certificate also reveals that Kylie gave birth at Cedars Sinai Medical Center in Los Angeles. Kylie and Travis’ youngest child was delivered by Dr. Thais Aliabadi, who also assisted with the birth of Stormi and Khloé Kardashian’s daughter True Thompson, three.
During an appearance on The Ellen Degeneres Show last week, Kris Jenner, 66, revealed that Wolf looks just like his big sister and gave some details on how it felt watching the birth of her eleventh grandchild.
“I was in the hospital when he was born, it was me and Kylie and Travis because they have rules and regulations now, so you can only have so many people,” the momager explained.
“When he came out, it was like ‘there’s Stormi being born all over again!”
Before Kylie confirmed Wolf’s name, fans online speculated his name was Angel because of the comments left by Kris, who wrote: “Angel Pie”.
Kim Kardashian further fuelled fans' theories when she simply commented the emojis: "👼🏽💙".
The theory arose after fans noticed Wolf’s birthdate is the angel number 2/2/22.
“He got the best birthday, it was 2-2-22. An Angel number, 2-2-22 has always been Kylie’s Angel number,” said Kris.
“A friend of hers got her a necklace with that number and she was wearing it when she gave birth.”
Such a cute name!