The Duchess of Buffalo (1926)

"ZOWSKI! She danced on her toes and put Russia on it's ear! Napoleon's retreat from Moscow wasn't half so sensational as Connie's entry."

An American dancer on a tour of pre-Boleshevik Russia falls for a young army officer, and the feeling is mutual. However, the officer's father is the Grand Duke of Russia, and he has designs on the girl himself--not letting a minor detail like his already being married bother him--and refuses to let his son marry her.