Child star Danielle Spencer, who portrayed Dee Thomas on the 1970s comedy TV series “What’s Happening!!,” has died at 60, according to former co-star and friend Haywood Nelson.

Haywood Nelson is mourning the demise of his What's Happening!! co-star, Danielle Spencer. Haywood Nelson, who played Dwayne Nelson opposite Spencer's Dee Thomas on the show, was the first to announce her demise, at the age of 60. He took to Instagram on August 11 to pen a heartfelt statement in her honor:

Former child star Danielle Spencer has died at age 60 following a battle with breast cancer. Spencer’s friend and former What’s Happening!! costar Haywood Nelson shared the news in an Instagram post on Tuesday.