Millie Bobby Brown Vacations in Italy in a Vibrant Cutout Dress

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Millie Bobby Brown's style continues to evolve. The "Stranger Things" actor recently shared her skin-care and makeup routine with her Instagram followers, alongside photos of her posing in nature while vacationing in Italy. Showcasing a dewy, no-makeup makeup look, Brown, who's been enjoying some well-deserved time off with boyfriend Jake Bongiovi, was clad in a vibrant summery dress.

Covered in a bright-green daisy print, the sleeveless linen number from Sandro includes bold waist cutouts and an O-ring detail. While not visible in Brown's photos, the Sandro dress — which is available online to both purchase and rent — also comes with a flared, ruffled skirt. The Florence by Mills founder completed the outfit with a simple woven purse, a blue scrunchie, and Van Cleef & Arpels jewelry.

While the actor usually opts for casual and cute ensembles when out and about, she's recently started experimenting with more elevated styles and mature silhouettes, particularly since her 18th birthday back in February. At her celebration, she wore a strapless sequin gown with a keyhole cutout and high leg slit. For her first-ever BAFTA Film Awards appearance a month later, Brown rocked an intricate velvet and lace dress custom-made by Louis Vuitton creative director Nicolas Ghesquière. And more recently, at the season four premiere of "Stranger Things" in May, Brown dressed in another Louis Vuitton number — a high-slit, one-shoulder gown — with her new long, blond hair and bangs.

Ahead, find the "Stranger Things" star's exact vacation dress, and shop similar styles.