Duchess Meghan shows off her growing baby bump at surprise appearance at 2018 Fashion Awards

AOL.com Editors

Monday's 2018 Fashion Awards was filled with one big name after another -- Kendall Jenner, Penelope Cruz, Naomi Watts, to name a few -- but the audience got the surprise of a lifetime when the Duchess of Sussex appeared on stage at the Royal Albert Hall to present Givenchy's Clare Waight Keller with the British Womenswear Designer of the Year award.

Keller, who has been with the fashion powerhouse since 2017, has been behind many of the royal's most iconic looks, including her wedding dress.

"To have someone like that trust you in an incredible moment in their life is something that is just the most unbelievable honor," Keller said while accepting her award. "I can’t thank you enough because it was the most beautiful moment.”

Unsurprisingly Givenchy was also behind the dress Meghan donned to surprise and honor Keller. The 37-year-old royal took the stage in a black form-fitting one shoulder gown, which aptly showed off the duchess' growing baby bump. Meghan opted for a sleek and simple bun, a gold cuff by Pippa Small and Tamara Mellon heels, as well as some protocol-pushing dark nail polish to accessorize.

For the best looks at the annual awards show, scroll through below.