Alaina Reed Hall, best remembered by grown-ups as Olivia Robinson on Sesame Street, died last Thursday in Los Angeles. She was 63 years old.

Hall, who worked on the PBS program between 1976-1988, passed away after a long battle with breast cancer.

Prior to her role as Gordon’s younger sister, Alaina starred in Broadway productions of Hair and Chicago. She later moved into primetime television during her years on the comedy 227.

No memorial information has yet been announced for the actress.