The couple, who have three sons together, confirmed they were separating after nearly 13 years of marriage.
No Doubt singer Gwen filed her petition for divorce on Monday (3 August) citing irreconcilable differences, a Los Angeles Superior Court spokeswoman said.
Gwen and Gavin, who married in 2002, said in a statement that they were seeking joint custody of their sons, Zuma, Kingston and Apollo.
The statement read: "While the two of us have come to the mutual decision that we will no longer be partners in marriage, we remain partners in parenthood and are committed to jointly raising our three sons in a happy and healthy environment.
"To that end, we respectfully request privacy from the media during this time."
Gavin, who is the lead singer of the band Bush, is also father to daughter Daisy, from his previous relationship with Pearl Lowe.
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