Millie Bobby Brown grabbed attention on Instagram this week, dazzling her followers with shimmering pink underwear and a bold caption. The actress, now 21, showcased her evolution from a child star, while fans reacted to her sparkling transformation and grown-up style. The post, highlighting the Millie Bobby Brown glitter underwear Instagram trend, drew a lively and emotional response as users took note of her confidence and style shift.
Glamorous in Pink: A Striking Selfie Moment
In the celebrated images, Millie Bobby Brown posed for a confident selfie, drawing the camera’s focus to her enviable curves and youthful energy. She modeled a delicate, pale pink bra adorned with shimmering accents, blending her signature girlish charm with bold sophistication. As the founder of Florence by Mills, she finished the look with a playful pink bow and elegant underwire details, layering a low-cut sleeveless dress over her lingerie to finish her ensemble.
Accessories and Attention to Detail
The close-up images offered her audience a detailed look at Millie’s style choices. She displayed a matching pink manicure, drawing attention to her hands and the striking diamond ring that symbolized her recent marriage to Jake Bongiovi. With her hair tied back and a return to her hallmark dark locks, the actress elevated her outfit with matte, pink-toned makeup and a rosy lip. Elegant diamond earrings completed her luminous and fashionable statement. Fans flooded the comments:

“This is the most beautiful girl in the world,”
—Fan
“Not a child anymore. Got it!”
—Fan
“Lord she’s 21 now smh I’m getting old.”
—Fan
Promoting Summer Style and Her Expanding Brand
Beyond her Instagram selfies, Millie Bobby Brown continued to build her entrepreneurial profile. Active with her original Florence by Mills cosmetics brand, and newly launched Florence by Mills Coffee, Millie recently introduced Florence by Mills Fashion. In a cheerful post from a boat, she beamed while showing off her summer-ready style, donning terry shorts with a matching crop top. She captioned the look:
“It’s about to be a terry summer”
—Millie Bobby Brown, tagging Florence by Mills Fashion
Edgy Outfits Stir Social Media Conversation
Continuing to push style boundaries, Millie appeared on Instagram in undies-inspired shorts and a sharply cut pink bralette. The daring look led to both criticism and support, with some urging her to wear a more traditional shirt while others rallied behind her. Fan responses showed spirited defense and admiration:
“I don’t understand how people can hate on you and hate on your body figure but you’re clearly beautiful like they obviously don’t have eyes, maybe they need glasses”
—Fan
A Milestone Year as Millie Embraces Adulthood
Millie Bobby Brown, recognized globally since her childhood, has now unmistakably stepped into her adult years. Her recent Instagram posts and fashion choices reflect her new stage in life and growing influence far beyond her acting career. As reactions pour in from fans and the broader world, her updates reveal both her personal confidence and her focus on expanding her brand, Florence by Mills. All eyes are on how she will continue to shape her public identity and entrepreneurial ventures in the coming seasons.