David Letterman‘s sensational sex scandal has triggered a $300 million divorce war between the 62-year-old talk-show host and his outraged wife Regina, say sources close to the star.

The couple – who lived together for years before marrying March 19 – are fighting over everything from his extensive property holdings to custody of their son Harry, 6, according to insiders.

“It’s become a real battle,” revealed a Late Show insider.

“Regina is humiliated, and she wants to get even with David for his public admission he cheated on her repeatedly during their 23-year relationship.”

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Wow. We’re only six days into 2009 and there are SO many breakups to report. We heard about Katy Perry and Travis McCoy calling it quits right before New Year’s, but there are already plenty of new ones to add to the list.

• Jennifer Love Hewitt and Ross McCall have decided not to get married. “They broke up over the holidays and have ended their engagement. They’re both really sad about this. Even their friends are surprised; they seemed really happy. Everyone just wants the best for both of them,” a source tells People. Jennifer, 29, and Ross, 32, dated for two years before getting engaged in November 2007. [People]
• After 2 1/2 years of marriage, Patricia Arquette and Thomas Jane have split citing irreconcilable differences as the reason for the divorce. Patricia wants sole custody of their daughter Harlow, 5, with visitation for Thomas. She even hired legal superstar, Laura Wasser, to represent her in the case. You may recognize the name as she has worked with Angelina Jolie, Nick Lachey, and Britney Spears. [FoxNews]

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