Kate Middleton, Duchess of Cambridge, visited the set of the popular British period drama "Downton Abbey" on Thursday, lingering particularly in the fictional mansion's kitchen.

"It was a surreal and exciting experience to be at work and be visited by a member of the royal family," Laura Carmichael, 28, who plays Lady Edith Crawley, told People magazine. "She has watched the show and loves it and that's really lovely."

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"She spent the longest time in the kitchen, so me and Lesley are taking that as a compliment," said Sophie McShera, 30, who plays assistant cook Daisy Mason. Using the British term for a stovetop, Nicol, who is in her early 60s, said, "We told her that two of the hobs work -- because we like having steaming pans" for atmosphere.

Middleton, 33, who is eight months pregnant with her and 32-year-old Prince William's second child, spent two hours on the 1920s interior sets of the show, filmed at London's Ealing Studios. And although the duchess may have been a trifle starstruck, McShera said, "Everyone around her was more starstruck."

The ongoing series recently aired its fifth-season finale in the United States.