Alaina Reed Hall, a singer and actress best known for playing Olivia Robinson on "Sesame Street" for a dozen years beginning in the mid-1970s, died Dec 17, 2009. She was 63. Reed Hall was diagnosed with breast cancer in 2007. She died at Saint John's Health Center in Santa Monica.

Ms. Hall later played Rose Holloway on the situation comedy "227." She appeared on Broadway three times, first playing Mama Morton in the original 1975 production of Chicago. She went on to star in a 1977 revival of Hair and the 1978 Eubie Blake revue Eubie! The actress was also one of the original cast members of the 1974 Off-Broadway production of Sgt. Pepper's Lonely Hearts Club Band on the Road.

Ms. Reed joined "Sesame Street" in 1976 and played Olivia — a professional photographer and sister to the character Gordon — until 1988.

On "227," the 1985-90 NBC sitcom, she played the apartment landlady and best friend to star Marla Gibbs' Mary Jenkins character. She married in real life the co-star she married in the series, Kevin Peter Hall.

She was born Bernice Reed in Springfield, OH, on Nov. 10, 1946. Ms. Reed's first marriage ended in divorce. Her marriage to Hall ended with his death in 1991. Reed Hall married Tamim Amini in 2008.