LATEST: Reese Witherspoon has officially filed for divorce from Ryan Phillippe, asking the court for joint legal custody of the couple's daughters. The actress is also asking the judge to block attempts by her estranged husband to get spousal support, and she is seeking "exclusive use of the family residence." In the legal documents, obtained by news website, Witherspoon lists the date of separation as 30 October (06), and cites "irreconcilable differences" for the split.