The Snow White and the Huntsman actress, 34, filed for divorce Friday from her director-husband Sanders, 41, in Los Angeles County Superior Court on Friday, PEOPLE confirms.
News of the filing comes about six months after Sanders's highly publicized cheating scandal with Huntsman's star, Kristen Stewart.
Stewart has since patched things up with boyfriend Robert Pattinson, who she was dating during the fling.
In the court documents, Ross seeks joint custody of the couple's two kids, 5 and 7, TMZ reports. She also asks for spousal support and attorney's fees.
Sanders, who has filed his response to the divorce petition, also seeks joint custody of the kids, and wants to share legal fees with Ross, according to TMZ.