India Amarteifio Young Queen Charlotte Actor Adjoa Andoh Lady Agatha Danbury Actor Michelle Fairley Princess Augusta Actor Ruth Gemmell Lady Violet Bridgerton Actor Corey Mylchreest Young King George Actor Golda Rosheuvel Queen Charlotte Actor Arsema Thomas Young Lady Agatha Danbury Actor Sam Clemmett Young Brimsley Actor Freddie Dennis Reynolds Actor Hugh Sachs Brimsley Actor Julie Andrews Narrator Shonda Rhimes Executive Producer Betsy Beers Executive Producer Tom Verica Executive Producer