What is Tina Knowles net worth? Tina Knowles net worth is $20 million dollars. Born in Galveston, Texas, Tina Knowles, also known as Celestine Ann Knowles, is most widely recognized as the mother of performing artists Beyonce Knowles and Solange Knowles. During Beyonce's career with Destiny's Child, Tina Knowles designed all of the members' clothing. Tina Knowles' mother, a seamstress, influenced her designs, which combined the elegance of the 40s with the funky urban-inspired touches. Her designs attracted attention, and once Destiny's Child became stars, she launched her own clothing line called House of Dereon. In addition to her clothing line, she also runs a salon in Houston, Texas, called Headliners Hair Salon. She also recently launched a line for the Home Shopping Network. Her designs have been featured in multiple advertisements, usually worn by her daughters. She has one grandchild through Solange, and will soon have a second through Beyonce, who is currently expecting.