Mel Gibson's wife Robyn Gibson has filed for divorce after 28 years of marriage. She filed the petition in Los Angeles on Monday, April 9, citing irreconcilable differences. The couple issued a statement saying, "Throughout our marriage and separation we have always strived to maintain the privacy and integrity of our family and will continue to do so."

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The couple have seven children -- Hannah, 28, twins Edward and Christian, 26, William, 24, Louis, 21, Milo, 19, and…

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