Tess told the publication: “Camilla is a fan, she has been to visit us in the studio before and she spent half a day with us and it was wonderful.
“She was absolutely part of the whole process during the dress rehearsals, at the judge's desk, handling the panels and she really enjoyed her day.
"She's such a lovely lady and she actually invited all of our crew to Buckingham Palace two years ago and we filmed part of our routine there for Christmas.
“She's told me they watch together so I hope they enjoy the series.”
It's well-known that Camilla is a ballroom dancing fan, and last month the Duchess danced with Strictly’s former head judge, Len Goodman at the celebration of the 90th anniversary of the British Dance Council.
Camilla also hinted during a speech at the event that Princess Charlotte is a fan of the show.
While not referring to the young royal by name, Camilla said in the speech: “I have a granddaughter who is passionate about dancing.
“Maybe you will see her one day dancing at Strictly.”