Jennifer Garner has officially filed for divorce from Ben Affleck nearly two years after they first announced their split. Garner's petition and Affleck's response were identical and were filed together on Thursday, according to a public information officer for the Los Angeles Superior Court. Both documents were filed pro per, which means they are representing themselves.Both cited irreconcilable differences as the reason for divorce, and they asked for joint legal and physical custody of their three children.