All the pleading and begging didn't work. Paula Patton has filed for divorce from Robin Thicke after nine years of marriage.

Paula, who cites those irreconcilable differences, is seeking joint legal and physical custody of their four-year-old son Julian. TMZ says "the divorce is 'harmonious' and there are no real issues that will cause a conflict."

She plans to stay on a very nice estate she just purchased.

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