Little Sister was an American all-female vocal harmony group, which served primarily as the background vocalists for the influential rock/funk band Sly and the Family Stone in concert and on record.

While still in high school, Vaetta Stewart and her friends Mary McCreary, Elva Mouton and Tramaine Hawkins had a gospel group called the Heavenly Tones and performed at various venues around the Oakland/San Francisco area.

[citation needed] Sly Stone got the group to tour with him but Hawkins declined as she wanted to finish school.

Stone Flower released four singles, including one by R&B artist Joe Hicks, one by 6IX, and two by Little Sister: "You're the One" and "Somebody's Watching You", a cover of a song from Stand!.

Atlantic flipped the 2nd single over and reserviced it and it charted, as well; During the post-1971 period of Sly & the Family Stone, Mary McCreary left the group and began a solo career.