Millie Bobby Brown is getting a little naughty for the holiday season.
The Stranger Things actress is spreading some holiday cheer by dressing up in a new sexy Christmas outfit. She’s posing as a Christmas elf in red underwear.
In August 2019, Millie launched the brand Florence by Mills, marketed towards Gen Z girls. Its products are intended to fit young people’s skin. The fashion and beauty products are available worldwide.
Millie Bobby Brown is “Mill on a sill” to promote her new underwear line

Her acting in Stranger Things has had people talking for years, and now her Instagram photos are doing the same. The Emmy Award nominee says in this ad she’s “Mill on a sill.” Millie posted a video of the outfit online. “What better way to go to bed on a nice Christmas Eve than in this really cozy, modest, understated outfit,” she said. Millie concluded with a “ho, ho, ho.”
Unlike her recent appearance with Stranger Things co-star David Harbour, Millie looked genuinely happy wearing the holiday underwear. Earlier this month, a body language expert called Millie and David’s interactions as “overkill.” There has been plenty of speculation about the tensions between the two. That’s because, in January 2024, the Spanish-born actress filed a complaint alleging harassment and bullying against David. The two were promoting the final season of Stranger Things.
Next year, Millie will reprise her role as Enola Holmes in the film Enola Holmes 3, which is currently in post-production.
This new ad is an early Christmas present for fans of Stranger Things, with a bigger gift arriving in the coming weeks. The fifth and final season of the show is coming out on Netflix near the end of November in three parts.
Four episodes come out on November 26, with the next three released on Christmas Day. The series finale is set to air on New Year’s Eve.
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