- It tells a fictionalized story of Empress Elisabeth of Austria from the point of view of her lady-in-waiting, Irma Sztáray.
- The film’s working title was Sisi – Kaiserin Elisabeth (Sisi – Empress Elisabeth in English).
- Originally announced in 2019 and scheduled to start shooting in Autumn 2020, but filming had to be postponed due to the COVID-19 pandemic.
- Principal photography started on 20 September 2021 and wrapped on 15 November 2021.
- Filming took place in Germany, Bavaria, Vienna, Malta, and Switzerland.
- The film was originally set to be released in Spring 2022
- Director of this film Frauke Finsterwalder’s second collaboration with Sandra Hüller.
- The first film is about Empress Elisabeth of Austria to user her real nickname, “Sisi” with a single “S” in the title. Most film and TV adaptations incorrectly spell it as “Sissi” with a double “S” because of the “Sissi” trilogy from the 1950s starring Romy Schneider in the title role. Elisabeth herself spelled it as “Sisi”.
- The film’s first official German poster was unveiled on 15 November 2022 and a teaser trailer was released on 15 December 2022.
- It premiered in the Panorama section of the 2023 Berlin Film Festival on 19 February 2023. Sisi & I was released theatrically in Austria by Panda Film, and in Germany and Switzerland by DCM on 30 March 2023.