Arnold Schwarzenegger's divorce could cost him $200 million.

The 'Terminator' star split from wife Maria Shriver after 25 years earlier this month and she is now set to begin divorce proceedings against him following the revelation he fathered a child with their housekeeper Mildred 'Patty' Baena, and it is thought their assets - estimated between $200 and $400 million - could be divided evenly.

While the couple is believed to have a prenuptial agreement, because of the former Governor of California's infidelity and the length of the marriage, it could be voided.

Instead they would then have to split their net worth, as per Californian law.

Although Maria hasn't announced official divorce plans yet, she is believed to have hired top divorce lawyer Laura Wasser.

Meanwhile, Patty's ex-husband Rogelio Baena - who believed her son Joseph, now 13, was his child - has spoken of how betrayed he feels, particularly after the actor gave him "a big Judas hug," and told him "You must be so proud".

Rogelio - who divorced Patty two years ago - told the Daily Mirror newspaper: "I have been betrayed, and I'm shocked and very angry. I want to know what Mr. Schwarzenegger has to say for himself.

"We met many times and he always treated me as a friend - but he was lying. He has lied to me and he has lied to everyone. I feel like he has stuck a knife through my heart."

He also branded Patty - who has gone into hiding - a "snake," and said he will always feel like Joseph's father.