Célestine Ann Beyincé (born January 4, 1954), known as Tina Knowles-Lawson, is an American businesswoman and fashion designer known for her House of Deréon and Miss Tina by Tina Knowles fashion brands. She is the mother of singers Beyoncé and Solange Knowles, and was previously married, until 2011, to Mathew Knowles, the manager of Destiny's Child as well as Beyoncé, Kelly Rowland, and Michelle Williams.