The family were reportedly shown the costume department, where Louis tried on a small gold crown, and stood on the balcony where the contestants gather above the dance floor. A source said: “Kate and Charlotte are huge fans of Strictly so they were delighted to be invited. Kate took pictures of the children in the judges’ seats.
“She seemed really relaxed and was all smiles. She was polite, sweet and charming with everyone and made sure Louis didn’t get over-excited.
“There was a strict security lockdown on set and staff were told not to take any photos. The children were especially excited and got dressed up.
“They were thrilled to be on set and to meet their favourite celebrities.”
Their visit comes amidst the bombardment of explosive claims and scathing attacks from Omid Scobie’s newly released book Endgame. The author takes aim at several members of the Royal Family, including Princess Kate.
The Firm has not responded to any of the claims.