The Gypsy Princess

Die Csárdásfürstin (The Csárdás Princess; translated into English as The Riviera Girl and The Gipsy Princess) is an operetta in 3 acts by Hungarian composer Emmerich Kálmán, libretto by Leo Stein and Bela Jenbach (). It premiered in Vienna at the Johann Strauß-Theater () on 17 November 1915. Numerous film versions and recordings have been made. The operetta is widely beloved in Hungary, Austria, Germany, all of Europe and particularly in the former Soviet Union, where it had been adapted into a popular film. It is arguably Kálmán's most successful work.

It was made into a 1927 silent German film The Csardas Princess directed by Hanns Schwarz. In 1944 it was made into a Soviet operetta film Silva directed by Aleksandr Ivanovsky. It was one of the most successful releases in the Soviet Union that year. Later, in 1981, it was made again into an even more successful Soviet operetta film under the same name (), directed by Yan Frid.

Silva Varescu, a self-sufficient and professionally successful cabaret performer from Budapest, is about to embark on a tour of America. Three of her aristocratic admirers, named Edwin, Feri and Boni, prefer her to stay. Edwin, unaware that his parents have already arranged a marriage for him back home in Vienna, orders a notary to prepare a promissory note of his expected marriage to Silva within ten weeks. Silva then leaves on her American tour, and Edwin leaves for peacetime military duty.

Just at the time this promissory note is about to expire, Silva visits Edwin's palace in Vienna, pretending to have married Boni as her entrée into his family's society. Edwin is about to be engaged to Stasi, who does not care for him and wishes only an arranged marriage. Boni falls in love with Stasi and Edwin regrets not keeping his promise to Silva sooner. However, Edwin makes the faux pas of informing Silva that his parents would accept Silva only if she pretends to have been divorced from Boni and therefore already entered society via an earlier marriage. Edwin's father separately informs Silva that if she marries Edwin without first having achieved noble rank through some other route, her role in society could be merely that of a Gypsy Princess. Silva realizes that she is better than them and has a brighter future than them. She purposefully embarrasses Edwin and his father, turning her back on them and leaving in the presence of their assembled friends.

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