Soul singer Cissy Houston, who was also known as the mother of pop icon Whitney Houston, died Monday morning. She was 91.

Speaking to PEOPLE in 2013 about her revealing memoir, 'Remembering Whitney,' Cissy Houston reflected on the star's tragic death.

Cissy Houston, the mother of the late Whitney Houston and a two-time Grammy winner who performed alongside superstar musicians like Elvis Presley and Aretha Franklin, has died, CBS News confirmed. She was 91.