AUSTIN, Texas - Sandra Bullock has filed for divorce from her husband, Jesse James, citing discord and conflict of personalities without "any reasonable expectations of reconciliation."

The divorce petition, which was filed Friday, said the couple has no child under 18 years of age who is entitled to support. The Oscar-winning actress revealed Wednesday on People magazine's website that she is adopting a 3?-month-old boy, Louis Bardo Bullock, who was born in New Orleans.

James and Bullock separated in March after five years of marriage, following reports that the celebrity motorcycle builder and reality-TV star had been unfaithful.

Bullock's divorce papers were filed in a Travis County court in Austin, Texas, where Bullock owns two downtown restaurants and is believed to have a home. A call to Bullock's attorney was not immediately returned.

The divorce filing said Bullock and James no longer lived together and she believed they could enter into an agreement to divide their estates.

Bullock, 45, won the Oscar for best actress for her role in the blockbuster hit "The Blind Side," on March 7. Within days of her win, the cheating allegations became public and Bullock went into seclusion.