Royals Prince Harry Said the Sweetest Thing to Meghan Markle's Wedding Dress Designer During Reception Clare Waight Keller got a thank you from the groom himself during the royal wedding reception By Diana Pearl Published on May 20, 2018 10:22 AM Share Tweet Pin Email If you were blown away by Meghan Markle‘s elegant and regal wedding gown, designed by Clare Waight Keller of Givenchy, you weren’t alone — so was the groom. Prince Harry quickly sought out the designer during the couple’s lunchtime reception in St. George’s Hall at Windsor Castle to thank her for creating Meghan’s white silk gown. “He came straight up to me and said, ‘Oh my God, thank you. She looks absolutely stunning,’ ” Waight Keller told reporters Sunday at Kensington Palace in London. “I think everybody saw on television he was just absolutely in awe. I think she looked incredible.” Can’t get enough of PEOPLE’s Royals coverage? Sign up for our newsletter to get the latest updates on Kate Middleton, Meghan Markle and more! The Givenchy designer said that she had the chance to speak to the newlyweds at the lunchtime reception, and said they were completely blissful following the wedding ceremony. It’s the event of the year! Be sure to keep up with all of PEOPLE’s royal wedding coverage and don’t forget to check out everything you need to know about Meghan Markle’s perfect style. “She was just glowing after the ceremony,” Waight Keller said. “I think it was just such a special moment for the two of them. They are so in love. I was just thrilled to be part of it.” Meghan Markle The design of Meghan’s gown was a complete secret up until the moment Meghan stepped out of her car at St. George’s Chapel. Even Waight Keller’s family didn’t know she was designing the dress until May 19. “Literally on the morning,” she says of when her family found out. “It was really a secret.”