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.

On TV's "What's Happening!!" Danielle Spencer turned herself into a household name at just 11 years old, playing sassy and quick-witted Dee Thomas.

Danielle Spencer, who played Dee Thomas on the popular 1970s ABC sitcom What's Happening!!, has died. Spencer passed away Monday at the age of 60 after a lengthy battle with cancer. Her death was announced on social media by her What's Happening!