Celebrity Laura Dern and Ben Harper Divorcing Harper cites irreconcilable differences and seeks joint custody of their two children By People Staff Published on October 10, 2010 10:55 AM Share Tweet Pin Email Photo: Angela Weiss/WireImage Musician Ben Harper filed for divorce from actress Laura Dern after five years of marriage, citing irreconcilable differences and seeking joint custody of their two children, PEOPLE confirms. The papers, filed Friday, claim the pair separated in January, TMZ reports. Dern, 43, and Harper, 40, were married in 2005 in Los Angeles. They have a 9-year-old son and a 5-year-old daughter.– Mike Fleeman