Millie Bobby Brown Launches Holiday Underwear Line with Festive 'Mill on a Sill' Post
Millie Bobby Brown's Holiday Underwear Line Reveal

Millie Bobby Brown has unveiled a festive new collection from her brand, Florence by Mills, treating her social media followers to a series of playful and stylish holiday-themed photos and videos. The 21-year-old actress shared the promotional content on her Instagram, perfectly capturing the seasonal spirit.

A Festive Fashion Statement

In the visually striking campaign, Brown posed atop a fireplace mantel, playfully reimagining the classic Elf on the Shelf tradition. Dubbed "Mill on a sill," she showcased the Softie Seamless set, which consists of a skin-baring crop top and matching booty shorts. The ensemble was accessorized with a thick black belt and a long Santa hat, creating a look that was both cozy and chic.

In a video clip from the campaign, the young star addressed her audience with holiday cheer. "What better way to go to sleep on a nice Christmas Eve than in this cozy, modest, understated outfit," Brown said, before ending the clip with a flirty laugh and a cheerful, "Ho, ho, ho." The new line is available for purchase on her official Florence by Mills website.

Personal Milestones and Professional Excitement

This festive launch comes during a significant year for Brown, both personally and professionally. In a major personal announcement made in August 2025, Brown and her husband, Jake Bongiovi, revealed they had welcomed their first child, a baby girl, through adoption.

"This summer we welcomed our sweet baby girl through adoption," the couple wrote in a joint social media post. "We are beyond excited to embark on this beautiful next chapter of parenthood in both peace and privacy. And then there were 3."

The pair, who is the son of rock legend Jon Bon Jovi, were secretly married in May 2024 after first being linked in June 2021. They shared photos from their Italian wedding several months after the ceremony.

A Holiday-Themed Finale for Stranger Things

Fans of Brown's acting work also have a festive treat to anticipate. The second part of the final season of her hit Netflix series, Stranger Things, is scheduled for release on Christmas Day, ensuring her followers will have plenty to celebrate this holiday season.