Kristen Stewart's parents divorcing

Kristen's mother, Jules Stewart, filed a divorce petition against John Stewart, who she married 27 years ago. She filed the papers at County Superior Court, here citing irreconcilable differences, reports tmz.com.

Kristen Stewart. Pic/Santa Banta

Jules filed the documents herself without using a lawyer one month after her daughter was photographed embracing her "Snow White and the Huntsman" director Rupert Sanders, despite dating her 'Twilight' co-star Robert Pattinson.

Kristen's mother, who is a writer-director and has worked for Fox, says she has been estranged from John, a TV producer and stage manager, since June 15, 2010.