Katherine, Duchess of Cambridge, visited the set of the popular British costume drama “Downton Abbey,” meeting cast, crew and executives. Her visit comes as the show films its sixth season.

The Duchess visited Ealing Studios, where most of the scenes from “Downton Abbey” are filmed, on Thursday and met with various cast members as well as creator Julian Fellowes and producer Gareth Neame. Both the “Downton Abbey” and the Kensington Palace Twitter accounts shared the news and photos on social media as well as various photos. They used the hashtag #DuchessAtDownton.

The Duchess of Cambridge, who is said to be a huge fan of the show along with her husband, talked with make up artists and costume designers, as well as various cast members, including Michelle Dockery (Lady Mary), Joanne Froggatt (Anna), Jim Carter (Carson) Rob James-Collier (Thomas), Phyllis Logan (Mrs. Hughes), Sophie McShera (Daisy), and Lesley Nicol (Mrs. Patmore).

During her visit, she watched a scene being filmed with Dockery and Froggatt in one of the bedroom sets. According to the Guardian, she asked them if they “ever get the giggles.” Both actors answered, “Oh, yes,” at the same time.

She watched a second take while wearing headphones with “HRH” written on them.

In a very cute scene, Oliver Barker, who plays the young Master George Crawley, gifted the Duchess a toy train for his namesake, Prince George.

Neame, executive producer and managing director of Carnival Films, was thrilled the Duchess had visited, according to the Los Angeles Times.

"We are so honored to have had Her Royal Highness the Duchess of Cambridge join us on the set of 'Downton Abbey,'" he said.

"The duchess is a great fan of the show, so it was interesting to see her step into the world-renowned sets and see the characters come to life. She was so incredibly gracious to spend time with our actors and those behind the camera who bring the saga of the Crawley family to life.”

Similarly, The Guardian reports creator and writer Julian Fellowes was happy with the visit and credited the Duchess for the show’s success.

“Just as we were trying to shift Downton in America, you actually made a visit and someone said had you ever heard of a show called 'Downton Abbey.' And you said you’d heard of it, you’d watched it, you’d enjoyed it,” he said.

“This went into the media like an Exocet missile, and soon all of America and most of the world knew it and as a result out challenge faded away.”

The show is one of the most popular British entertainment exports. According to CNN, the show is watched in over 220 territories, and the last season drew in an average viewership of 10 million.