Sissy is an English childhood diminutive of "sister" — also the Bavarian-Austrian nickname for **Empress Elisabeth of Austria-Hungary (1837-1898), known as "Sisi" or "Sissi," wife of Emperor Franz Joseph I; her tragic life and assassination by an Italian anarchist in Geneva at age 60 made her the most-mythologized empress in modern European history**. **The 1955 Austrian *Sissi* film trilogy starring Romy Schneider was the most-watched German-language film series of its era**. **Sissy Spacek (born Mary Elizabeth Spacek, 1949)** — **American actress; Academy Award for Best Actress for *Coal Miner's Daughter* (1980), playing Loretta Lynn (whom she actually resembles and who personally chose Spacek for the role)**. **Six Oscar nominations; *Carrie* (1976), *Three Women* (1977), *In the Bedroom* (2001)**. **Sissy Goodwin** — pioneering trans-rights educator. **Sissi (musical)** — Austrian production.
Subject of countless Austrian-Hungarian Empire histories.
Sissy reduces to one — the number of Empress.