The actress spoke exclusively to PEOPLE about the royal connection to one of her looks at the show's season 3 premiere on May 13

Florence Hunt, who plays Hyacinth on the series, revealed the surprise cameo Diana's wardrobe makes in the series on the Bridgerton season 3 red carpet last night. "I wore this beautiful blue dress, and I believe it was a cut off from Princess Diana's dress that she wore at some point," Hunt told People in an interview.

Diana paired the look with a pearl choker and matching bracelet, a black clutch and silver heels. She wore another flowy blue frock in 1987 during the Cannes Film Festival. She looked as elegant as ever in a strapless Catherine Walker gown complete with a cinched waist, a pleated skirt and a matching scarf.