Brittany Murphy left her entire estate to her mother, Sharon, TMZ has learned.

Sources tell us, years before Brittany was married she wrote a holographic (handwritten) will, leaving everything to her mom. The will was stored in her manager's safe.

Brittany's husband, Simon Monjack, told TMZ after they got married Brittany had a formal will drafted, along with a trust. Simon tells us all of her assets under the new will and trust go to Sharon.

Simon tells us, at his request, the will specifically says, "I am married to Simon Monjack who I have intentionally left out of this will."