Tina Knowles has filed for divorce from her husband of 29 years, Mathew Knowles.
Tina, 55, and Mathew, 58, are parents to superstar singer Beyoncé, 28, and younger sister Solange, 23.
Court documents show Knowles filed divorce papers in Harris County, Texas in November under the name Celestine.
Mathew works as Beyoncé's manager, and Tina teamed up with Beyoncé for her fashion line, House of Deréon. She was also a costume designer for Destiny's Child.
In October, Mathew was named in a paternity lawsuit from another woman.