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Achy-breaky heartbreak for Miley Cyrus' mom and dad.

After 17 years of marriage, Billy Ray Cyrus filed for divorce from wife Tish in Tennessee on Tuesday, has confirmed. 

"As you can imagine, this is a very difficult time for our family," they tell Us in a joint statement. "We are trying to work through some personal matters. We appreciate your thoughts and prayers."

In the divorce complaint acquired by Us -- filed in Williamson Country Chancery Court -- singer Billy Ray, 49, is listed as the  plaintiff, citing "irreconcilable differences."

Billy Ray, and Tish, 43, have three kids together: pop star Miley, 17, Braison, 16, and Noah, 10; Billy Ray also adopted Trace and Brandi, Tish's children from a previous relationship.

In the papers, Billy Ray asks for shared custody of their three minor kids, and for an equitable division of their marital assets.