Danielle Spencer, who played the wisecracking and tattling little sister Dee Thomas on the 1970s sitcom "What's Happening!!" has died at 60.

Danielle Spencer, who played the precocious youngster Dee Thomas on the 1970s ABC sitcom What’s Happening!!, has died. She was 60. Spencer died Monday in a hospital in Richmond, Virginia, her What’s Happening!! co-star Haywood Nelson told The Hollywood Reporter .

Dr. Danielle Spencer, who played "Dee" on "What's Happening" before becoming a Richmond veterinarian, has died at 60 after battling breast cancer since 2014. This report is from 2016.