Empress Alexandra Feodorovna with her family at knights tournament in 1842 Horace Vernet (1789-1863)

The picture has something of this: people, woman, group, mammal, child, cavalry, wear, recreation, man, costume, girl, enjoyment, veil, motion, seated, fun.
Perhaps it’s a painting of a group of people riding on the backs of horses next to a boy in a blue dress and a girl in a red dress.