Millie Bobby Brown<\/strong><\/a> and Jake Bongiovi\u2019s<\/strong> respective families are over the moon after the couple adopted a baby girl \u2014 and that includes the child\u2019s proud grandpa, rocker Jon Bon Jovi<\/strong>.<\/p>\n \u201cJon has always been a hands-on dad so it\u2019s no surprise that he\u2019s completely embracing this new grandpa role,\u201d a source tells Star<\/em>. \u201cHe and [wife] Dorthea<\/strong> are both in heaven. They love babies.\u201d<\/p>\n As Star<\/em> previously reported, Brown, 21, announced in a statement shared on Instagram<\/a> on August 21 that she and Bongiovi, 23, had welcomed their first child together<\/a> via adoption.<\/p>\n The source adds that Brown and Bongiovi \u2014 who are \u201choled up in East Hampton\u201d with his family \u2014 are \u201cbonding and soaking up this very special time\u201d with their newest addition.<\/p>\n Plus, the \u201cLivin\u2019 On a Prayer\u201d singer, 63, can\u2019t help but \u201cbrag to everyone about what natural parents Jake and Millie are.\u201d<\/p>\n \u201cHe\u2019s so proud of them and says he\u2019s blown away by how mature they both are,\u201d the source continues. \u201cHaving a baby around again is bringing so much joy. They\u2019re in this beautiful bubble right now.\u201d<\/p>\n The Stranger Things<\/em> star and Bongiovi have been very open about wanting to adopt in the past \u2014 and Brown has previously said that she wanted to be a young mom<\/a>.<\/p>\n \u201cMy mom actually had her first child at 21, and my dad was 19,\u201d she said on the Smartless<\/em><\/a> podcast. \u201cYou know, it\u2019s been my thing since before I met Jake.\u201d<\/p>\n However, the source reveals that she and\u00a0 Bongiovi don\u2019t \u201cplan to stop at just one.\u201d<\/p>\n \u201cThey want at least four kids, but it won\u2019t surprise anyone if they have more because they\u2019re both so family-focused,\u201d the source tells Star<\/em>. \u201cThey\u2019re young but they\u2019re both way more mature than the average 20-something, so this just feels right for them.\u201d<\/p>\n<\/div>\n![\"Jake](\"https:\/\/staging.starmagazine.com\/wp-content\/uploads\/2025\/08\/jon-bon-jovi-millie-bobby-brown-jake-bongiovi-new-parents-02-scaled.jpg\")