Maria Shriver Files For Divorce From Arnold Schwarzenegger

In the divorce petition, obtained by TMZ, Shriver cites "irreconcilable differences" as her reason for ending the 25-year marriage.

Shriver is asking for spousal support and wants the judge to deny Arnold the right to ask for support for himself-- though it's highly unlikely he would.

Shriver is asking for joint custody of their minor children, who she names in the document as 17-year-old "Patrick Arnold Shriver Schwarzenegger" and 13-year-old "Christopher Sargent Shriver Schwarzenegger."

And, in the petition, filed by disso-queen Laura Wasser, Shriver is asking Arnold to pay the attorneys fees of both parties.