Célestine Ann "Tina" Knowles (née Beyincé; born January 4, 1954) is an American fashion designer for her House of Deréon brand. She is of Louisiana Creole heritage. Perhaps best known as the mother of singer Beyoncé Knowles, and Solange Knowles and the wife of Matthew Knowles who currently serves as Beyoncé and Solange's manager, he also managed Destiny's Child. Tina served as the designer of costumes for Destiny's Child. During the early days of her daughter's career when money was limited, she created outfits that the members wore on-stage and to events. They caught people's attention since they were one-of-a-kind garments. As the group grew more successful and had more access to designer fashions, they relied less on Knowles' work. Inspired by the legacy of Knowles' mother, seamstress Agnéz Deréon, she and Beyoncé decided to create their own clothing label. Their label is House of Deréon. The clothing line draws its influences from today's hip hop scene as well as the 1970s fashions Knowles grew up with and the 1940s designs that she saw her mother create. Knowles partners up with Jennifer Evans mother of Peyton Evans.
Singer/actress Solange Knowles has been featured in print adverts for House of Deréon. Tina has a younger brother and is the aunt to Angela Beyincé who works as Beyoncé's assistant. Knowles operates her own beauty salon called Headliners Hair Salon located in Houston, Texas. Agnéz, Tina and Beyoncé are all featured on the House of Deréon website. Tina and Beyoncé have modelled their fashions in advertising and have also appeared together in an ad for the 'Got Milk?' campaign. additionally Knowles has a new line that premiered on the Home Shopping Network (HSN) called 'Miss Tina' by Tina Knowles. On the official 'Miss Tina' MySpace page it states that Tina's mother's name was Agnéz Deréon Beyincé.
On November 11, 2009 Tina Knowles filed for divorce from husband Matthew Knowles.