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, a two-time Grammy-winning singer who performed alongside superstar musicians like Elvis Presley and Aretha Franklin and the mother of Whitney Houston, has died.