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Meghan, Duchess of Sussex, stuns in sleek black gown at British Fashion Awards

The Duchess of Sussex, the former Meghan Markle, stole the show at the British Fashion Awards on Monday when she presented the designer of the year award to Clare Waight Keller, the first woman to head Givenchy and the designer of the duchess' royal wedding dress. NBC's Kelly Cobiella reports for TODAY.

Surprise!

Meghan, Duchess of Sussex, wowed onlookers during an unannounced appearance at the 2018 British Fashion Awards at London's Royal Albert Hall on Monday evening.

The Fashion Awards 2018 In Partnership With Swarovski - Show
Surprise! Meghan, Duchess of Sussex showed up unexpectedly at the 2018 British Fashion Awards ceremony to present an award to her wedding dress designer, Clare Waight Keller.Tristan Fewings/BFC / Getty Images

The former Meghan Markle 37, looked stunning in a sleek one-shoulder black velvet Givenchy gown as she walked onstage to present the prestigious British Womenswear Designer of the Year to her wedding dress designer, Clare Waight Keller, artistic director of Givenchy.

The royal mom-to-be was all smiles as she cradled her growing baby bump. She accessorized her slinky look with gold Tamara Mellon "Karat" sandals that matched her shimmering gold earrings and bracelets. She wore her hair pulled back in a low bun.

The Fashion Awards 2018 In Partnership With Swarovski - Show
Duchess Meghan wore a sleek one-shoulder black velvet Givenchy gown as she walked onstage to present the prestigious British Womenswear Designer of the Year to her wedding dress designer, Clare Waight Keller of Givenchy.Joe Maher/BFC / Getty Images

"It is such an honor to be here celebrating British fashion and British fashion designers in my new home of the U.K.,” Meghan told the cheering audience, per People.

While accepting her award, Waight Keller thanked the duchess, gushing, "This woman is so amazing. I got to know Meghan on such a personal level. To have someone like that trust you on such a personal moment in their life ... I can't thank you enough because it was the most beautiful moment."

The Fashion Awards 2018 In Partnership With Swarovski - Show
The duchess and actress Rosamund Pike present the British Designer of the Year Womenswear Award to designer Clare Waight Keller.Jeff Spicer/BFC / Getty Images

Waight Keller created the now-famous silk gown Meghan wore during her May wedding to hubby Prince Harry. The historic dress featured a bateau neckline, sculpted bodice and three-quarter sleeves.

Image: FILE PHOTO: Royal Wedding
Waight Keller created the now-famous silk gown Meghan wore to during her May wedding to hubby Prince Harry.POOL New / Reuters

Fans wanting a closer look at Meghan's wedding gown can now see it for themselves in a display at Windsor Castle, where the newlyweds said "I do."

The dress is part of a new exhibit called "A Royal Wedding: The Duke and Duchess Of Sussex," running through Jan. 6.