Millie Bobby Brown and Jake Bongiovi’s baby news may have shocked the world, but his rockstar dad, Jon Bon Jovi, had a different reaction.

Brown, 21, and Bongiovi, 23, announced they had welcomed their first child together in a joint Instagram post on August 21, 2025. “This summer we welcomed our sweet baby girl through adoption. We are beyond excited to embark on this beautiful next chapter of parenthood in both peace and privacy,” the post read. “And then there were 3.”

After the announcement, a source told Star magazine that Bon Jovi—who shares his son with his wife Dorothea Hurley—that the singer was in “heaven” over the baby news. “Jon has always been a hands-on dad so it’s no surprise that he’s completely embracing this new grandpa role,” the insider said. “He and Dorthea are both in heaven. They love babies.”

The insider revealed that Brown and Bongiovi are currently “holed up in East Hampton” with his family, “bonding and soaking up this very special time” with their newborn. The source also added that Bon Jovi can’t help but “brag to everyone about what natural parents Jake and Millie are.”

“He’s so proud of them and says he’s blown away by how mature they both are,” the insider continued. “Having a baby around again is bringing so much joy. They’re in this beautiful bubble right now.”

The source also revealed that Brown and Bongiovi don’t “plan to stop at just one” child. “They want at least four kids, but it won’t surprise anyone if they have more because they’re both so family-focused,” the insider said. “They’re young but they’re both way more mature than the average 20-something, so this just feels right for them.”

Brown and Bongiovi married in May 2024 after three years of dating. In an interview on the “Smartless” podcast in 2025, Brown revealed that she always wanted to be a young mom because of the age her parents were when they had her. “My mom actually had her first child at 21, and my dad was 19,” she said. “You know, it’s been my thing since before I met Jake.”

Along with Jake, Bon Jovi also shares three other kids with Dorothea: sons Romeo and Jesse and daughter Stephanie.