Royal expert Lady C has described Princess Anne as “athletic and nimble” following reports that the King’s sister could appear on the BBC dance show Strictly Come Dancing. Professional dancer Nadiya Bychkova said the Princess Royal told her last month that she would like to appear in the popular TV dance competition. Speaking about Princess Anne’s love of dance, Lady C told GBN America: “I think Princess Anne would actually be wonderful on Strictly because she’s very athletic, very agile and very nimble. “I’m not sure it would be the right thing for the image of the monarchy to have her [on th…