There's a lot of joy, one source told Entertainment Tonight: “Kylie and Travis are over the moon since the arrival of their baby boy. They have wanted to grow their family and give Stormi a sibling for a while and they couldn't be happier.”

“They both felt so ready for this, especially since they have a better idea of what to expect,” the source added. “Stormi is so thrilled that she gets to be a big sister and wants to help Kylie with all the mommy and parenting duties.”

A source told People that back at home, “Kylie has help, but is also very hands-on. Kylie and Travis are happy together. He is working on new music, but is also around a lot.”

Stormi herself is “very gentle” with her brother, the source said. “She is fascinated by her little brother and has been able to hold him,” the source added.

Jenner and Scott have decided on a name for their son that they'll share publicly “in a few days,” the source said. “[Travis] and Kylie picked a name together. They will share when Kylie is ready.”

Jenner announced her son's birth on her Instagram on February 6. Over 20 million people liked the post, featuring Stormi holding her brother's hand. “? 2/2/22,” Jenner captioned it, revealing his birth date.