Michael Douglas and Catherine Zeta-Jones in $300 million divorce

After Catherine Zeta-Jones turned up alone to the Red 2 premieres in Los Angeles and New York, the rumor mill went into overdrive that she’s getting a divorce from Michael Douglas after 13 years of marriage.

They’ve overcome Michael Douglas’ stage 4 cancer and her bipolar disorder but apparently they’re now calling it quits.

“Michael and Catherine’s marriage is effectively over,” one close family insider told Star magazine.

“Michael is going to announce the split soon, but he wants to wait until after the Emmys in September.”

According to this insider: “Catherine is fighting to save the marriage but he’s had it.”

“Michael has been through so much in recent years. he feels that life is too short for all this misery – her wild rages, temper tantrums, mood swings, secret boozing and demanding ways!”

And considering Michael Douglas’ divorce to first wife Diandra in 2000 was one of the most expensive in Hollywood history, his split from Catherine Zeta-Jones could cost a lot of money. Star magazine are putting the couple’s joint worth at a cool $300 million.

Another source said: “It’s been a long, rocky road for Michael and Catherine, but it’s clear to every-one that the end is near.”

Meanwhile the National Enquirer reports that Michael Douglas, 68, and Catherine Zeta-Jones, 43, secretly split a year ago in a trial separation.