Actress Angelina Jolie is so upset with Brad Pitt's mother Jane for having a 'sneaky' relationship with his ex-wife Jennifer Aniston that she has threatened to disown her.

Jolie is reportedly enraged that Jane had invited Pitt's ex-wife Aniston to spend Thanksgiving with her. Contactmusic.com reports that Aniston has been estranged from her own mother for almost nine years now.

'Jen sees no reason to stop contact with Jane. They speak on the phone at least once a month and exchange cards and e-mails. But, apparently, it makes Ange's (Angelina Jolie) skin crawl. Ange has pulled no punches, and has made it clear to Brad that there will be no family harmony while Jane keeps up her friendship with Aniston. But Brad has told Ange that what his mother does in her free time is her own business,' said a friend of Aniston.

Aniston and Pitt split in 2005 after being married for five years but she has remained close to her former mother-in-law even after Pitt moved on with Jolie to start a family.