Meghan Markle Is Pure Elegance in a Backless Black St. Agni Dress

As Meghan Markle settles into a new style era with stylist Jamie Mizrahi, she's also embracing minimalist designers she hasn't yet worn before. First up: Celebrity-favorite brand St. Agni.

On Friday, April 12, Markle gave another glimpse at her fresh wardrobe outlook while attending a dinner for Sentebale, a charity Prince Harry co-founded. In photos shared by longtime friend Ignacio "Nacho" Figueras on Instagram, Markle can be seen chatting with guests over a candlelit meal. She's dressed in a backless, black dress from St. Agni, a minimally-leaning Australian label.

Markle paired the streamlined gown, featuring a halter neckline and side slit, with vintage Dior earrings and Mach & Mach heels.

St. Agni Hudson Midi Dress

Mach & Mach Satin-Trimmed Embellished Mesh Pumps

Markle's backless dress was the second piece she wore over the weekend from a designer newly incorporated into her wardrobe. Earlier in the day, she broke with royal (or, former royal) conventions to wear a Heidi Merrick sundress featuring a cutout in the torso. The airy midi dress was a perfect fit for watching Prince Harry compete in Sentebale's annual Royal Salute Polo Challenge under the Wellington, Florida, sun—the first Markle has attended since 2018. Her polished-yet-casual outfit also included Heidi Merrick sunglasses, plus a Valentino bag and Aquazzura pumps she has worn previously.

As Meghan Markle reportedly explores a "Hollywood rebrand" with stylist Jamie Mizrahi (whose clients include Adele and Jennifer Lawrence), St. Agni is a fitting brand to bring into her closet. The label's embellishment-free, neutrally-toned pieces are regulars in Kendall Jenner, Gigi Hadid, and Hailey Bieber's wardrobes; it's also been spotted on celebrities from Margot Robbie to Zendaya. If Markle is looking for more It-Girl approved labels, she's clearly found one.

While Markle's style may be trending in a more experimental-yet-minimal direction, her impact on designers hasn't changed. St. Agni's Hudson dress is already selling out in several sizes.

Shop More St. Agni Pieces Inspired by Meghan Markle's

St. Agni Classic Side Detail Dress

St. Agni + Net Sustain Wool-Blend Twill Halterneck Tunic

St. Agni + Net Sustain Arc Cutout Stretch-Crepe Midi Dress