Millie Bobby Brown has unveiled the first pictures of her daughter following their adoption announcement last month.

The 21-year-old Stranger Things actress initially shared the joyful news with her husband, Jake Bongiovi, on 21 August, posting on Instagram to say: "This summer, we welcomed our sweet baby girl through adoption. We are thrilled to embark on this beautiful new chapter of parenthood in both peace and privacy.

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

Yesterday (1 September), the new mom shared updates with her 64.4 million followers on the social media platform about her newly-expanded family.

The carousel post included seven photos, featuring a cozy mirror selfie of the couple, Millie in a matching leopard-print headscarf and bralette, a sunset, another mirror selfie of Millie, a candid shot of her carrying luggage through a security checkpoint, and a pig.

Millie Bobby Brown, 21, and her husband, Jake Bongiovi, 23, announced they were adopting a baby girl last month (Instagram/@milliebobbybrown)

However, the photo that caught the most attention from fans was the fourth one, showing 23-year-old Jake holding a baby carrier, presumably containing his and Millie's adopted child, as he walked towards an airplane.

She captioned the adorable collection with emojis of a milk bottle, sparkles, and a baby chick.

In the comments, one Instagram user wrote: "Jake on dad duty, we love to see it!"

"Cutest parents ever," praised another, while a third added: "So happy for you both and this new journey in your lives!"

A fourth person congratulated: "Congrats on the adoption, best of luck to you all!"

"This baby girl is going to grow up so loved and happy," exclaimed another. "Thank you for adopting and sharing the joy."

Fans have also begun speculating about the baby's name, with some wondering if it could be 'Love', considering the initial Instagram announcement ended with 'Love, Millie and Jake Bongiovi'.

The Stranger Things star shared her first photos of her adopted baby girl (Instagram/@milliebobbybrown)

"I thought the baby’s name was Love when I first read this," one person speculated online, while another commented: "Honestly, it could be a clever way to announce her name lol."

Naturally, most people interpret it as:

Love,

Millie and Jake Bongiovi

This is a common way to sign off cards and letters, although not everyone includes a comma after ‘love’, and some prefer to use phrases like 'love from' or 'with love'.

However, keen observers on social media speculated if she was actually listing her family: Love, Millie, and Jake.