Bonnie Pointer

Patricia Eva "Bonnie" Pointer (born July 11, 1950) is an American R&B and disco singer, most notable for being the next-to-youngest member of the 1970s and 1980s family music group, The Pointer Sisters. She scored several moderate solo hits after leaving the Pointers in 1977, including a disco cover of The Elgins' "Heaven Must Have Sent You" which became a U.S. top 20 pop hit on September 1, 1979.

source: Wikipedia