Millie Bobby Brown has not publicly shared an exact “baby’s birthday” date, but she and her husband Jake Bongiovi announced in August 2025 that they had welcomed a baby girl via adoption earlier that summer.

What actually happened

  • Millie Bobby Brown and Jake Bongiovi quietly married in 2024 and later revealed they had become parents to a “sweet baby girl” through adoption.
  • Their announcement post went out in August 2025 and described the child as having been adopted “this summer,” without specifying the exact day she was born or placed with them.

So, when did she “have a baby”?

In celebrity and news coverage, the moment they “had a baby” is treated as the period in summer 2025 when the adoption was finalized and announced, not a disclosed birth date.

As of now, only the general timeframe—summer 2025, announced in August 2025—is public; more precise details are being kept private to protect their child.

Quick forum/trending context

  • Online forums and social media started buzzing about Millie “having a baby” around late August 2025, especially among Stranger Things fans reacting to her becoming a mom before the show’s final season arrived.
  • Entertainment outlets later added context, confirming that the baby is adopted and emphasizing the couple’s wish for privacy around their daughter’s name and exact birth details.

Key takeaway

If you are looking for a specific date like “She had her baby on X day,” that information has not been shared publicly; all that is known is that Millie Bobby Brown and Jake Bongiovi adopted their daughter in the summer of 2025 and made it public in August 2025.

Information gathered from public forums or data available on the internet and portrayed here.