Citing "irreconcilable differences," she filed papers Thursday, TMZ reports. She lists the date of separation as Sept. 11, 2010.
According to papers, the two had a prenup.
The divorce petition asks that "earnings and accumulations of [Aguilera] before marriage, during marriage and from and after the date of separation" be considered separate property.
The petition also seeks to terminate Bratman's ability to get child support.
Aguilera is seeking joint physical and legal custody of their child, Max, who is 2.
She is being represented by Laura Wasser.
"Although Jordan and I are separated, our commitment to our son Max remains as strong as ever," she told Us Tuesday in a statement on Tuesday.
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