Look back on the breakups that rocked Hollywood this year
Billy Ray Cyrus and Tish Cyrus
After Tish reportedly hooked up with rocker Bret Michaels, the country singer (and dad to Miley) filed for divorce from his wife of 17 years. "As you can imagine, this is a very difficult time for our family," the couple told Us in October. "We are trying to work through some personal matters."