Sofía Diéguez is an Argentine transgender actress, singer, performer, playwright and cultural worker. She was born on December 8, 1986, in Buenos Aires and grew up in Lanús. She began studying acting at the age of thirteen and later trained in theatre, musical theatre, ballet and singing, including studies at the Teatro Colón. Her acting training also included work with Alicia Zanca, Ana María Campoy, Pepe Cibrián and Julieta Vallina. At sixteen, she was cast in Pepe Cibrián's El fantasma de Canterville, appearing in the production during the 2003 and 2004 seasons. She subsequently continued her theatrical training and toured Latin America with children's theatre productions. At the age of twenty-five, Sofía began her gender transition and temporarily stepped away from acting and performance. She later returned to the profession with a role in Un gallo para Esculapio.
Her subsequent television work included El Marginal, where she played La Luli, and Telefe's Pequeña Victoria, where she played Violeta. Her theatre career includes Crianzas, el musical, based on the work of Susy Shock, for which she received the 2021 ATINA Award for Female Performer. She later wrote and starred in Magenta, una sirena más allá del mar, a children's musical inspired by the figure of the mermaid and addressing identity and freedom. Her later theatrical work has included Estar System, in which she also participated in the creative and dramaturgical process, and Teoría de la Sirena, a musical biodrama and autobiographical work combining theatre, music and elements of her own life. In 2023, she made her feature-film debut in Natural Arpajou's Unicornio. In 2025, she appeared in El suelo que sostiene a Hande, a Buenos Aires theatre production inspired by the life of Turkish transgender activist Hande Kader. Alongside her acting career, Sofía is a singer and songwriter who performs under the artistic identity La Sirena. In 2022, she released her first single, La Sirena, followed by an EP featuring La Sirena, Medusa, Sola and La Poderosa. She writes her own lyrics and melodies and has also participated in musical performances and live cultural productions. Outside the stage and screen, Sofía has worked as a tutor at the Mocha Celis educational project. Her career encompasses theatre, television, cinema, musical performance, songwriting, dramaturgy and autobiographical work, alongside public work on transgender visibility, representation and trans childhoods.
