What was the name of Frida Kahlo’s sister who was also a close companion?

Frida Kahlo’s sister and close companion was named Cristina Kahlo.

Cristina was the youngest of Frida Kahlo’s sisters and was born in 1908. The sisters shared a close relationship throughout their lives, and Cristina became an important presence in Frida’s household and personal world.

Cristina appears in several of Kahlo’s works, including My Nurse and I and the double portrait My Sister Cristina. The latter presents Cristina in a formal portrait setting and reflects the family relationships that repeatedly appear in Kahlo’s art.

Cristina’s relationship with Diego Rivera also became a source of pain and conflict. Rivera had an affair with her, an episode that deeply affected Frida. This personal history is one reason biographical accounts distinguish Cristina from Kahlo’s other sisters, Matilde and Adriana.