After 28 years of marriage, Tish Cyrus has filed for divorce from her husband, country star Billy Ray Cyrus. She filed last week in Williamson County, Tennessee, according to legal papers acquired by CNN. "Irreconcilable differences," according to the paperwork, are the grounds for divorce. The pair has not lived together in the last two years, according to the document. Tish, 54, and Billy Ray Cyrus, 60, have five adult children: Trace, Braison, Brandi, Miley, and Noah. They married in 1993. "It is after 30 years, five lovely children, and a lifetime of memories, we have decided to go our separate ways — not with grief, but with love in our hearts," a spokeswoman for the Cyruses told People in a joint statement"We will always be family," the statement reads, "and we look forward to a continued and loving shared experience as friends and parents.""We didn't make this choice lightly or hastily, but with so much going on in the world, we wanted to provide some clarity and finality so we can stay focused on what matters.” "We will always be family," the statement reads, "and we look forward to continuing our loving shared experience as friends and parents.""We didn't make this choice lightly or quickly, but with so much going on in the world, we wanted to provide some clarity and finality so we could stay focused on what matters."