Millie Bobby Brown has adopted a beautiful baby girl with her husband Jake Bongiovi.

The couple who got married last year, made the surprise announcement on Instagram on Thursday.

The post read: ‘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.

‘And then there were three. Love, Millie and Jake Bongiovi.’

The couple have yet to share any images of their daughter but Bongiovi was seen pushing a stroller on July 20 in a post shared by Brown captioned: ‘helluva summer thus far.’

The Stranger Things actress opened up about starting a family with Bongiovi and revealed that he already knew ‘how important’ it is to her. 

During an appearance on the Smartless podcast, the actress said that although she knows she is ‘really young,’ she is looking forward to motherhood.

‘My mom actually had her first child at 21, and my dad was 19. And you know, it’s been my thing since before I met Jake,’ she said.

‘Since I was a baby, I told my mom, like, baby dolls. I wanted to be a mom just like the way my mom was to me. And my nan, my grandmother is, she was a huge part of my life. 

‘And so, yeah, I mean, Jake knows how important it is to me and, of course, I want to focus on really establishing myself as an actor and as a producer, but I also find it’s so important to start a family for me personally,’ Millie said.