Tish Cyrus has filed for divorce from Billy Ray Cyrus after 28 years of marriage. The documents were filed in Tennessee last week, according to court records. "In the divorce docs, obtained by TMZ, Tish says the couple hasn't lived together for more than 2 years ... and lists "irreconcilable differences" as the reason for the split. She's asking the court to equally distribute all marital assets." More TMZ.com